# CVE-2024-51978: HL-L8260CDN - Authentication Bypass

> Live exploitation tracking for CVE-2024-51978 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2024-51978

## Key facts

- **Exploitation phase:** Background Noise. Continuous low-level scanning or exploitation attempts are observed, mostly opportunistic and automated.
- **CVSS score:** 9.8
- **Public exploit available:** Yes
- **Affected products:** Brother Industries, Ltd HL-L8260CDN, Brother Industries, Ltd HL-L8260CDW, Brother Industries, Ltd HL-L8360CDW, Brother Industries, Ltd HL-L8360CDWT, Brother Industries, Ltd HL-L9310CDW, Brother Industries, Ltd DCP-L8410CDW, Brother Industries, Ltd MFC-L8610CDW, Brother Industries, Ltd MFC-L8690CDW, Brother Industries, Ltd MFC-L8900CDW, Brother Industries, Ltd MFC-L9570CDW, Brother Industries, Ltd MFC-L9577CDW, Brother Industries, Ltd MFC-L8610CDW(for Japan), Brother Industries, Ltd MFC-L9570CDW(for Japan), Brother Industries, Ltd HL-L5210DN, Brother Industries, Ltd HL-L5212DN, Brother Industries, Ltd HL-L5215DN, Brother Industries, Ltd HL-L5210DW, Brother Industries, Ltd HL-L5210DWT, Brother Industries, Ltd HL-L5212DW, Brother Industries, Ltd HL-L5215DW, Brother Industries, Ltd HL-L6210DW, Brother Industries, Ltd HL-L6210DWT, Brother Industries, Ltd HL-L6217DW, Brother Industries, Ltd HL-L5218DN, Brother Industries, Ltd HL-L5228DW, Brother Industries, Ltd HL-L6310DW, Brother Industries, Ltd HL-L6410DN, Brother Industries, Ltd HL-L6415DN, Brother Industries, Ltd HL-L6415DN CSP, Brother Industries, Ltd HL-L6412DW, Brother Industries, Ltd HL-L6415DW, Brother Industries, Ltd HL-L6415DWT, Brother Industries, Ltd HL-L6418DW, Brother Industries, Ltd HL-EX415DW, Brother Industries, Ltd DCP-L5510DN, Brother Industries, Ltd DCP-L5512DN, Brother Industries, Ltd DCP-L5518DN, Brother Industries, Ltd DCP-L5510DW, Brother Industries, Ltd DCP-L5610DN, Brother Industries, Ltd DCP-L5660DN, Brother Industries, Ltd DCP-L5662DN, Brother Industries, Ltd MFC-L5710DN, Brother Industries, Ltd MFC-L5715DN, Brother Industries, Ltd MFC-L5718DN, Brother Industries, Ltd MFC-L5710DW, Brother Industries, Ltd MFC-L5715DW, Brother Industries, Ltd MFC-L5717DW, Brother Industries, Ltd MFC-L5728DW, Brother Industries, Ltd MFC-L5912DW, Brother Industries, Ltd MFC-L5915DW, Brother Industries, Ltd MFC-L6710DW, Brother Industries, Ltd MFC-L6720DW, Brother Industries, Ltd MFC-L6810DW, Brother Industries, Ltd MFC-L6910DN, Brother Industries, Ltd MFC-L6915DN, Brother Industries, Ltd MFC-L6915DN CSP, Brother Industries, Ltd MFC-L6912DW, Brother Industries, Ltd MFC-L6915DW, Brother Industries, Ltd MFC-EX910, Brother Industries, Ltd MFC-EX915DW, Brother Industries, Ltd MFC-L6820DW, Brother Industries, Ltd HL-L9410CDN, Brother Industries, Ltd HL-L9430CDN, Brother Industries, Ltd HL-L9470CDN, Brother Industries, Ltd HL-EX470W, Brother Industries, Ltd MFC-L9610CDN, Brother Industries, Ltd MFC-L9630CDN, Brother Industries, Ltd MFC-L9635CDN, Brother Industries, Ltd MFC-L9670CDN, Brother Industries, Ltd NFC-EX670, Brother Industries, Ltd MFC-EX670W, Brother Industries, Ltd HL-L8245CDW, Brother Industries, Ltd HL-L8240CDW, Brother Industries, Ltd HL-L8230CDW, Brother Industries, Ltd HL-L3295CDW, Brother Industries, Ltd HL-L3288CDW, Brother Industries, Ltd HL-L3280CDW, Brother Industries, Ltd HL-L3240CDW, Brother Industries, Ltd HL-L3220CWE, Brother Industries, Ltd HL-L3220CW, Brother Industries, Ltd HL-L3220CDW, Brother Industries, Ltd HL-L3215CW, Brother Industries, Ltd HL-L3228CDW, Brother Industries, Ltd DCP-L3555CDW, Brother Industries, Ltd DCP-L3560CDW, Brother Industries, Ltd DCP-L3568CDW, Brother Industries, Ltd MFC-L3720CDW, Brother Industries, Ltd MFC-L3740CDW, Brother Industries, Ltd MFC-L3740CDWE, Brother Industries, Ltd MFC-L3755CDW, Brother Industries, Ltd MFC-L3760CDW, Brother Industries, Ltd MFC-L3765CDW, Brother Industries, Ltd MFC-L3768CDW, Brother Industries, Ltd MFC-L3780CDW, Brother Industries, Ltd MFC-L8340CDW, Brother Industries, Ltd MFC-L8390CDW, Brother Industries, Ltd MFC-L8395CDW, Brother Industries, Ltd HL-L3300CDW, Brother Industries, Ltd DCP-L3515CDW, Brother Industries, Ltd DCP-L3520CDW, Brother Industries, Ltd DCP-L3520CDWE, Brother Industries, Ltd DCP-L3528CDW, Brother Industries, Ltd HL-B2100D, Brother Industries, Ltd HL-B2100DB, Brother Industries, Ltd HL-B2150W, Brother Industries, Ltd HL-B2180DW, Brother Industries, Ltd HL-B2180DWB, Brother Industries, Ltd HL-B2181DW, Brother Industries, Ltd HL-L2400DW, Brother Industries, Ltd HL-L2400DWE, Brother Industries, Ltd HL-L2405W, Brother Industries, Ltd HL-L2420DW, Brother Industries, Ltd HL-L2425DW, Brother Industries, Ltd HL-L2440DW, Brother Industries, Ltd HL-L2445DW, Brother Industries, Ltd HL-L2447DW, Brother Industries, Ltd HL-L2460DN, Brother Industries, Ltd HL-L2461DN, Brother Industries, Ltd HL-L2460DW, Brother Industries, Ltd HL-L2460DWXL, Brother Industries, Ltd HL-L2467DW, Brother Industries, Ltd HL-L2865DW, Brother Industries, Ltd HL-B2158W, Brother Industries, Ltd HL-B2188DW, Brother Industries, Ltd DCP-L2600D, Brother Industries, Ltd DCP-B7600DB, Brother Industries, Ltd DCP-B7600D, Brother Industries, Ltd DCP-L2627DWE, Brother Industries, Ltd DCP-B7620DWB, Brother Industries, Ltd DCP-B7620DW, Brother Industries, Ltd DCP-L2627DW, Brother Industries, Ltd DCP-B7640DWB, Brother Industries, Ltd DCP-L2627DWXL, Brother Industries, Ltd DCP-B7640DW, Brother Industries, Ltd DCP-L2605DW, Brother Industries, Ltd HL-L2464DW, Brother Industries, Ltd DCP-L2622DW, Brother Industries, Ltd DCP-L2625DW, Brother Industries, Ltd DCP-L2620DW, Brother Industries, Ltd HL-L2475DW, Brother Industries, Ltd HL-L2465DW, Brother Industries, Ltd DCP-L2640DN, Brother Industries, Ltd DCP-L2647DW, Brother Industries, Ltd DCP-L2640DW, Brother Industries, Ltd MFC-L2802DN, Brother Industries, Ltd MFC-L2827DW, Brother Industries, Ltd MFC-L2806DW, Brother Industries, Ltd MFC-L2805DW, Brother Industries, Ltd MFC-L2802DW, Brother Industries, Ltd MFC-L2800DW, Brother Industries, Ltd MFC-L2765DW, Brother Industries, Ltd MFC-L2760DW, Brother Industries, Ltd MFC-B7800DN, Brother Industries, Ltd MFC-B7811DW, Brother Industries, Ltd MFC-B7810DWB, Brother Industries, Ltd MFC-B7810DW, Brother Industries, Ltd MFC-L2835DW, Brother Industries, Ltd MFC-L2827DWXL, Brother Industries, Ltd DCP-B7548W, Brother Industries, Ltd DCP-B7558W, Brother Industries, Ltd DCP-B7578DW, Brother Industries, Ltd DCP-L2508DW, Brother Industries, Ltd DCP-L2518DW, Brother Industries, Ltd DCP-B7608W, Brother Industries, Ltd DCP-B7628DW, Brother Industries, Ltd DCP-B7638DN, Brother Industries, Ltd DCP-B7648DW, Brother Industries, Ltd DCP-L2628DW, Brother Industries, Ltd DCP-L2548DW, Brother Industries, Ltd DCP-L2648DW, Brother Industries, Ltd DCP-L2600DW, Brother Industries, Ltd FAX-L2800DW, Brother Industries, Ltd DCP-L2680DW, Brother Industries, Ltd DCP-L2660DW, Brother Industries, Ltd HL-L2480DW, Brother Industries, Ltd DCP-L2665DW, Brother Industries, Ltd MFC-L2817DW, Brother Industries, Ltd MFC-L2807DW, Brother Industries, Ltd MFC-L2820DWXL, Brother Industries, Ltd MFC-L2820DW, Brother Industries, Ltd MFC-L2861DW, Brother Industries, Ltd MFC-L2862DW, Brother Industries, Ltd MFC-L2860DW, Brother Industries, Ltd MFC-L2885DW, Brother Industries, Ltd MFC-L2880DWXL, Brother Industries, Ltd MFC-L2886DW, Brother Industries, Ltd MFC-L2860DWE, Brother Industries, Ltd MFC-L2880DW, Brother Industries, Ltd MFC-L2900DW, Brother Industries, Ltd MFC-L2900DWXL, Brother Industries, Ltd DCP-B7658DW, Brother Industries, Ltd DCP-B7650DW, Brother Industries, Ltd MFC-L2920DW, Brother Industries, Ltd MFC-L2922DW, Brother Industries, Ltd MFC-L2960DW, Brother Industries, Ltd MFC-L2980DW, Brother Industries, Ltd HL-L1230W, Brother Industries, Ltd HL-L1232W, Brother Industries, Ltd HL-L1808W, Brother Industries, Ltd HL-L1238W, Brother Industries, Ltd DCP-L1630W, Brother Industries, Ltd DCP-L1632W, Brother Industries, Ltd DCP-L1638W, Brother Industries, Ltd DCP-L1848W, Brother Industries, Ltd HL-L2325DW, Brother Industries, Ltd HL-L2350DW, Brother Industries, Ltd HL-L2351DW, Brother Industries, Ltd HL-L2352DW, Brother Industries, Ltd HL-L2357DW, Brother Industries, Ltd HL-L2370DN, Brother Industries, Ltd HL-L2371DN, Brother Industries, Ltd HL-L2372DN, Brother Industries, Ltd HL-2590DN, Brother Industries, Ltd HL-L2370DW, Brother Industries, Ltd HL-L2370DWXL, Brother Industries, Ltd HL-L2375DW, Brother Industries, Ltd HL-L2376DW, Brother Industries, Ltd HL-B2050DN, Brother Industries, Ltd HL-B2080DW, Brother Industries, Ltd HL-L2385DW, Brother Industries, Ltd HL-L2386DW, Brother Industries, Ltd HL-2595DW, Brother Industries, Ltd HL-L2350DWR, Brother Industries, Ltd HL-L2370DNR, Brother Industries, Ltd HL-L2375DWR, Brother Industries, Ltd HL-L2395DW, Brother Industries, Ltd MFC-L2730DW, Brother Industries, Ltd MFC-L2732DW, Brother Industries, Ltd MFC-L2750DW, Brother Industries, Ltd MFC-L2750DWXL, Brother Industries, Ltd MFC-L2751DW, Brother Industries, Ltd MFC-L2770DW, Brother Industries, Ltd MFC-L2771DW, Brother Industries, Ltd MFC-L2730DWR, Brother Industries, Ltd MFC-L2750DWR, Brother Industries, Ltd DCP-7195DW, Brother Industries, Ltd MFC-7895DW, Brother Industries, Ltd MFC-L2730DN, Brother Industries, Ltd HL-L2390DW, Brother Industries, Ltd DCP-L2530DW, Brother Industries, Ltd DCP-L2531DW, Brother Industries, Ltd DCP-L2532DW, Brother Industries, Ltd DCP-L2535DW, Brother Industries, Ltd DCP-L2537DW, Brother Industries, Ltd DCP-B7520DW, Brother Industries, Ltd DCP-L2550DN, Brother Industries, Ltd DCP-L2550DW, Brother Industries, Ltd DCP-L2551DN, Brother Industries, Ltd DCP-L2551DW, Brother Industries, Ltd DCP-L2552DN, Brother Industries, Ltd DCP-B7535DW, Brother Industries, Ltd MFC-L2690DW, Brother Industries, Ltd MFC-L2710DN, Brother Industries, Ltd MFC-L2712DN, Brother Industries, Ltd MFC-L2710DW, Brother Industries, Ltd MFC-L2712DW, Brother Industries, Ltd MFC-L2713DW, Brother Industries, Ltd MFC-L2715DW, Brother Industries, Ltd MFC-L2716DW, Brother Industries, Ltd MFC-L2717DW, Brother Industries, Ltd MFC-B7715DW, Brother Industries, Ltd DCP-L2530DWR, Brother Industries, Ltd DCP-L2550DNR, Brother Industries, Ltd MFC-L2710DNR, Brother Industries, Ltd MFC-L2710DWR, Brother Industries, Ltd FAX-L2710DN, Brother Industries, Ltd DCP-7190DN, Brother Industries, Ltd DCP-B7530DN, Brother Industries, Ltd DCP-L2550DW(TWN), Brother Industries, Ltd MFC-7890DN, Brother Industries, Ltd MFC-B7720DN, Brother Industries, Ltd MFC-L2715DW(for Tiwan, Koria), Brother Industries, Ltd DCP-7090DW, Brother Industries, Ltd DCP-7190DW, Brother Industries, Ltd HL-L3210CW, Brother Industries, Ltd HL-L3230CDN, Brother Industries, Ltd HL-L3230CDW, Brother Industries, Ltd HL-3160CDW, Brother Industries, Ltd HL-L3270CDW, Brother Industries, Ltd HL-3190CDW, Brother Industries, Ltd DCP-L3510CDW, Brother Industries, Ltd DCP-L3517CDW, Brother Industries, Ltd HL-L3290CDW, Brother Industries, Ltd DCP-L3551CDW, Brother Industries, Ltd DCP-L3550CDW, Brother Industries, Ltd DCP-9030CDN, Brother Industries, Ltd MFC-L3710CDW, Brother Industries, Ltd MFC-L3730CDN, Brother Industries, Ltd MFC-9150CDN, Brother Industries, Ltd MFC-L3735CDN, Brother Industries, Ltd MFC-L3745CDW, Brother Industries, Ltd MFC-L3750CDW, Brother Industries, Ltd MFC-9350CDW, Brother Industries, Ltd MFC-L3770CDW, Brother Industries, Ltd HL-L6250DW, Brother Industries, Ltd HL-5595DNH, Brother Industries, Ltd HL-5595DN, Brother Industries, Ltd HL-L6250DN, Brother Industries, Ltd HL-L6202DW, Brother Industries, Ltd HL-L6200DW, Brother Industries, Ltd HL-L5202DW, Brother Industries, Ltd HL-L5200DW, Brother Industries, Ltd HL-L5050DN, Brother Industries, Ltd HL-5590DN, Brother Industries, Ltd HL-L5100DN, Brother Industries, Ltd HL-L5102DW, Brother Industries, Ltd HL-L5100DNT, Brother Industries, Ltd HL-L5200DWT, Brother Industries, Ltd HL-L6200DWT, Brother Industries, Ltd HL-L6450DW, Brother Industries, Ltd HL-L6402DW, Brother Industries, Ltd HL-L6400DW, Brother Industries, Ltd HL-L6300DW, Brother Industries, Ltd HL-L6300DWT, Brother Industries, Ltd HL-L6400DWT, Brother Industries, Ltd HL-L6400DWG, Brother Industries, Ltd MFC-L6970DW, Brother Industries, Ltd MFC-L6950DW, Brother Industries, Ltd MFC-L6902DW, Brother Industries, Ltd MFC-L6900DW, Brother Industries, Ltd MFC-L6800DW, Brother Industries, Ltd MFC-L6750DW, Brother Industries, Ltd MFC-L6702DW, Brother Industries, Ltd MFC-L6700DW, Brother Industries, Ltd MFC-L5902DW, Brother Industries, Ltd MFC-L5900DW, Brother Industries, Ltd MFC-L5850DW, Brother Industries, Ltd MFC-L5802DW, Brother Industries, Ltd MFC-L5800DW, Brother Industries, Ltd MFC-8540DN, Brother Industries, Ltd MFC-L5755DW, Brother Industries, Ltd MFC-L5750DW, Brother Industries, Ltd MFC-8530DN, Brother Industries, Ltd MFC-L5700DN, Brother Industries, Ltd MFC-L5702DW, Brother Industries, Ltd MFC-L5700DW, Brother Industries, Ltd DCP-L6600DW, Brother Industries, Ltd DCP-L5652DN, Brother Industries, Ltd DCP-L5650DN, Brother Industries, Ltd DCP-L5602DN, Brother Industries, Ltd DCP-L5600DN, Brother Industries, Ltd DCP-L5502DN, Brother Industries, Ltd DCP-L5500DN, Brother Industries, Ltd MFC-L6900DWG, Brother Industries, Ltd HL-L2305W, Brother Industries, Ltd HL-L2315DW, Brother Industries, Ltd HL-L2340DW, Brother Industries, Ltd HL-L2340DWR, Brother Industries, Ltd HL-L2360DN, Brother Industries, Ltd HL-L2360DW, Brother Industries, Ltd HL-L2365DW, Brother Industries, Ltd HL-L2366DW, Brother Industries, Ltd HL-2560DN, Brother Industries, Ltd HL-2569DW, Brother Industries, Ltd HL-L2360DNR, Brother Industries, Ltd HL-L2365DWR, Brother Industries, Ltd DCP-L2520DW, Brother Industries, Ltd DCP-L2520DWR, Brother Industries, Ltd DCP-L2540DN, Brother Industries, Ltd DCP-L2540DW, Brother Industries, Ltd DCP-L2541DW, Brother Industries, Ltd DCP-L2540DNR, Brother Industries, Ltd DCP-L2560DW, Brother Industries, Ltd HL-L2380DW, Brother Industries, Ltd DCP-L2560DWR, Brother Industries, Ltd DCP-7180DN, Brother Industries, Ltd DCP-7189DW, Brother Industries, Ltd MFC-L2680W, Brother Industries, Ltd MFC-L2685DW, Brother Industries, Ltd MFC-L2700DW, Brother Industries, Ltd MFC-L2700DN, Brother Industries, Ltd MFC-L2700DWR, Brother Industries, Ltd MFC-L2700DW(ASA), Brother Industries, Ltd MFC-L2701DW, Brother Industries, Ltd MFC-L2703DW, Brother Industries, Ltd MFC-L2705DW, Brother Industries, Ltd MFC-L2707DW, Brother Industries, Ltd MFC-L2720DW, Brother Industries, Ltd MFC-L2720DWR, Brother Industries, Ltd MFC-L2740DW, Brother Industries, Ltd MFC-L2740DWR, Brother Industries, Ltd MFC-7880DN, Brother Industries, Ltd MFC-7889DW, Brother Industries, Ltd FAX-L2700DN, Brother Industries, Ltd MFC-L2720DN, Brother Industries, Ltd HL-1210W, Brother Industries, Ltd HL-1210WE, Brother Industries, Ltd HL-1210WR, Brother Industries, Ltd HL-1211W, Brother Industries, Ltd HL-1212W, Brother Industries, Ltd HL-1212WE, Brother Industries, Ltd HL-1222WE, Brother Industries, Ltd HL-1223WE, Brother Industries, Ltd HL-1223WR, Brother Industries, Ltd HL-1212WR, Brother Industries, Ltd HL-1218W, Brother Industries, Ltd DCP-1610W, Brother Industries, Ltd DCP-1610WE, Brother Industries, Ltd DCP-1610WR, Brother Industries, Ltd DCP-1612W, Brother Industries, Ltd DCP-1622WE, Brother Industries, Ltd DCP-1623WE, Brother Industries, Ltd DCP-1623WR, Brother Industries, Ltd DCP-1612WE, Brother Industries, Ltd DCP-1612WR, Brother Industries, Ltd DCP-1615NW, Brother Industries, Ltd DCP-1616NW, Brother Industries, Ltd DCP-1617NW, Brother Industries, Ltd DCP-1618W, Brother Industries, Ltd MFC-1910W, Brother Industries, Ltd MFC-1910WE, Brother Industries, Ltd MFC-1912WR, Brother Industries, Ltd MFC-1911W, Brother Industries, Ltd MFC-1915W, Brother Industries, Ltd MFC-1911NW, Brother Industries, Ltd MFC-1916NW, Brother Industries, Ltd MFC-1919NW, Brother Industries, Ltd DCP-T830DW, Brother Industries, Ltd DCP-T835DW, Brother Industries, Ltd MFC-T930DW, Brother Industries, Ltd MFC-T935DW, Brother Industries, Ltd DCP-T530DW, Brother Industries, Ltd DCP-T535DW, Brother Industries, Ltd DCP-T536DW, Brother Industries, Ltd DCP-T730DW, Brother Industries, Ltd DCP-T735DW, Brother Industries, Ltd DCP-T230, Brother Industries, Ltd DCP-T236, Brother Industries, Ltd DCP-T238, Brother Industries, Ltd DCP-T435W, Brother Industries, Ltd DCP-T430W, Brother Industries, Ltd DCP-T436W, Brother Industries, Ltd DCP-T439W, Brother Industries, Ltd MFC-J5340DW, Brother Industries, Ltd MFC-J5345DW, Brother Industries, Ltd MFC-J2340DW, Brother Industries, Ltd MFC-J5340DWE, Brother Industries, Ltd MFC-J5740DW, Brother Industries, Ltd MFC-J2740DW, Brother Industries, Ltd MFC-J6540DW, Brother Industries, Ltd MFC-J6740DW, Brother Industries, Ltd MFC-J3540DW, Brother Industries, Ltd MFC-J7100CDW, Brother Industries, Ltd MFC-J6540DWE, Brother Industries, Ltd MFC-J6940DW, Brother Industries, Ltd MFC-J3940DW, Brother Industries, Ltd MFC-J7300CDW, Brother Industries, Ltd MFC-J5855DW, Brother Industries, Ltd MFC-J5855DW XL, Brother Industries, Ltd MFC-J5800CDW, Brother Industries, Ltd MFC-J5955DW, Brother Industries, Ltd MFC-J6555DW, Brother Industries, Ltd MFC-J6555DW XL, Brother Industries, Ltd MFC-J6955DW, Brother Industries, Ltd MFC-J6957DW, Brother Industries, Ltd MFC-J7500CDW, Brother Industries, Ltd MFC-J7600CDW, Brother Industries, Ltd HL-J6010DW, Brother Industries, Ltd HL-J7010CDW, Brother Industries, Ltd MFC-J6959DW, Brother Industries, Ltd MFC-J7700CDW, Brother Industries, Ltd HL-JF1, Brother Industries, Ltd DCP-T520W, Brother Industries, Ltd DCP-T525W, Brother Industries, Ltd DCP-T720DW, Brother Industries, Ltd DCP-T725DW, Brother Industries, Ltd DCP-T820DW, Brother Industries, Ltd DCP-T825DW, Brother Industries, Ltd MFC-T920DW, Brother Industries, Ltd MFC-T925DW, Brother Industries, Ltd DCP-T220, Brother Industries, Ltd DCP-T225, Brother Industries, Ltd DCP-T226, Brother Industries, Ltd DCP-T420W, Brother Industries, Ltd DCP-T425W, Brother Industries, Ltd DCP-T426W, Brother Industries, Ltd DCP-T428W, Brother Industries, Ltd DCP-C421W, Brother Industries, Ltd MFC-J1205W(XL), Brother Industries, Ltd MFC-J1215W, Brother Industries, Ltd DCP-J1200W(XL), Brother Industries, Ltd DCP-J1200N, Brother Industries, Ltd DCP-J1200WE, Brother Industries, Ltd MFC-J4335DW(XL), Brother Industries, Ltd MFC-J4340DW(XL), Brother Industries, Ltd MFC-J4345DW XL, Brother Industries, Ltd MFC-4340DWE, Brother Industries, Ltd MFC-J4535DW(XL), Brother Industries, Ltd MFC-J4540DW(XL), Brother Industries, Ltd MFC-J4440DW, Brother Industries, Ltd DCP-J4140N, Brother Industries, Ltd MFC-J4440N, Brother Industries, Ltd MFC-J4540N, Brother Industries, Ltd MFC-J4940DN, Brother Industries, Ltd SP-1, Brother Industries, Ltd SP-1 (for Japan), Brother Industries, Ltd MFC-J1010DW, Brother Industries, Ltd MFC-J1012DW, Brother Industries, Ltd DCP-J1050DW, Brother Industries, Ltd MFC-J1170DW, Brother Industries, Ltd DCP-J1140DW, Brother Industries, Ltd DCP-J526N, Brother Industries, Ltd DCP-J914N, Brother Industries, Ltd MFC-J926N-WB, Brother Industries, Ltd MFC-J904N, Brother Industries, Ltd MFC-J739DN, Brother Industries, Ltd MFC-J739DWN, Brother Industries, Ltd MFC-J939DN, Brother Industries, Ltd MFC-J939DWN, Brother Industries, Ltd DCP-J1800N, Brother Industries, Ltd DCP-J1700DW, Brother Industries, Ltd DCP-J1800DW, Brother Industries, Ltd MFC-J1800DW, Brother Industries, Ltd DCP-J1203N, Brother Industries, Ltd DCP-C1210N, Brother Industries, Ltd DCP-J4143N, Brother Industries, Ltd MFC-J4443N, Brother Industries, Ltd DCP-J4543N, Brother Industries, Ltd DCP-J528N, Brother Industries, Ltd DCP-J915N, Brother Industries, Ltd DCP-J928N-WB, Brother Industries, Ltd MFC-J905N, Brother Industries, Ltd MFC-J815DW XL, Brother Industries, Ltd MFC-J805DW, Brother Industries, Ltd MFC-J805DW XL, Brother Industries, Ltd DCP-J1100DW, Brother Industries, Ltd MFC-J995DW, Brother Industries, Ltd MFC-J995DW XL, Brother Industries, Ltd MFC-J1300DW, Brother Industries, Ltd DCP-J988N, Brother Industries, Ltd MFC-J1500N, Brother Industries, Ltd MFC-J1605DN, Brother Industries, Ltd MFC-J5845DW(XL), Brother Industries, Ltd MFC-J5945DW, Brother Industries, Ltd MFC-J6945DW, Brother Industries, Ltd MFC-J6947DW, Brother Industries, Ltd HL-J6000DW, Brother Industries, Ltd HL-J6100DW, Brother Industries, Ltd MFC-J6997CDW, Brother Industries, Ltd MFC-J6999CDW, Brother Industries, Ltd HL-J6000CDW, Brother Industries, Ltd MFC-T4500DW, Brother Industries, Ltd HL-T4000DW, Brother Industries, Ltd MFC-J5330DW, Brother Industries, Ltd MFC-J5335DW, Brother Industries, Ltd MFC-J2330DW, Brother Industries, Ltd MFC-J5730DW, Brother Industries, Ltd MFC-J5830DW, Brother Industries, Ltd MFC-J5930DW, Brother Industries, Ltd MFC-J2730DW, Brother Industries, Ltd MFC-J6530DW, Brother Industries, Ltd MFC-J6730DW, Brother Industries, Ltd MFC-J3530DW, Brother Industries, Ltd MFC-J6930DW, Brother Industries, Ltd MFC-J6935DW, Brother Industries, Ltd MFC-J3930DW, Brother Industries, Ltd MFC-J6535DW, Brother Industries, Ltd MFC-J6580CDW, Brother Industries, Ltd MFC-J6980CDW, Brother Industries, Ltd MFC-J6995CDW, Brother Industries, Ltd MFC-J5630CDW, Brother Industries, Ltd MFC-J6583CDW, Brother Industries, Ltd MFC-J6983CDW, Brother Industries, Ltd DCP-T510W, Brother Industries, Ltd DCP-T510W(for China), Brother Industries, Ltd DCP-T710W, Brother Industries, Ltd DCP-T710W(for China), Brother Industries, Ltd MFC-T810W, Brother Industries, Ltd MFC-T810W(for China), Brother Industries, Ltd MFC-T910DW, Brother Industries, Ltd DCP-J572DW, Brother Industries, Ltd MFC-J491DW, Brother Industries, Ltd MFC-J497DW, Brother Industries, Ltd DCP-J772DW, Brother Industries, Ltd DCP-J774DW, Brother Industries, Ltd MFC-J890DW, Brother Industries, Ltd MFC-J895DW, Brother Industries, Ltd MFC-J690DW, Brother Industries, Ltd DCP-J572N, Brother Industries, Ltd DCP-J577N, Brother Industries, Ltd DCP-J582N, Brother Industries, Ltd DCP-J972N, Brother Industries, Ltd DCP-J973N-W/B, Brother Industries, Ltd DCP-J978N-W/B, Brother Industries, Ltd DCP-J981N, Brother Industries, Ltd DCP-J982N-W/B, Brother Industries, Ltd MFC-J893N, Brother Industries, Ltd MFC-J898N, Brother Industries, Ltd NFC-J903N, Brother Industries, Ltd MFC-J738DN, Brother Industries, Ltd MFC-J738DWN, Brother Industries, Ltd MFC-J998DN, Brother Industries, Ltd MFC-J998DWN, Brother Industries, Ltd DCP-J587N, Brother Industries, Ltd DCP-J987N-W, Brother Industries, Ltd DCP-J987N-B, Brother Industries, Ltd ADS-2400N, Brother Industries, Ltd ADS-3000N, Brother Industries, Ltd ADS-2800W, Brother Industries, Ltd ADS-3600W, Brother Industries, Ltd ADS-2700W, Brother Industries, Ltd ADS-1250W, Brother Industries, Ltd ADS-1700W, Brother Industries, Ltd DS-740D, Brother Industries, Ltd DS/MDS-940DW, Brother Industries, Ltd ADS-3300W, Brother Industries, Ltd ADS-4500W, Brother Industries, Ltd ADS-2700We, Brother Industries, Ltd ADS-4300N, Brother Industries, Ltd ADS-4700W, Brother Industries, Ltd ADS-4900W, Brother Industries, Ltd ADS-1350W, Brother Industries, Ltd ADS-1800W, Brother Industries, Ltd TD-2310D, Brother Industries, Ltd TD-2320D, Brother Industries, Ltd TD-2320DF, Brother Industries, Ltd TD-2350D, Brother Industries, Ltd TD-2350DF, Brother Industries, Ltd TD-2320DSA, Brother Industries, Ltd TD-2350DSA, Brother Industries, Ltd TD-2350DFSA, Brother Industries, Ltd PT-P900Wc, Brother Industries, Ltd QL-1110NWBc, Brother Industries, Ltd QL-810Wc, Brother Industries, Ltd QL-820NWBc, Brother Industries, Ltd TD-2125N, Brother Industries, Ltd TD-2135N, Brother Industries, Ltd PJ-883, Brother Industries, Ltd RJ-3250WB, Brother Industries, Ltd RJ-4250WB, Brother Industries, Ltd TD-4420DN, Brother Industries, Ltd TD-4520DN, Brother Industries, Ltd TD-4550DNWB, Brother Industries, Ltd TD-4420DNZ, Brother Industries, Ltd QL-1110NWB, Brother Industries, Ltd QL-1115NWB, Brother Industries, Ltd QL-810W, Brother Industries, Ltd QL-820NWB, Brother Industries, Ltd RJ-2150, Brother Industries, Ltd RJ-2050, Brother Industries, Ltd RJ-2140, Brother Industries, Ltd PT-P900W, Brother Industries, Ltd PT-P950NW, Brother Industries, Ltd PT-D800W, Brother Industries, Ltd PT-E800W, Brother Industries, Ltd PT-E850TKW (for Asia pacific, EU, US), Brother Industries, Ltd PT-E850TKW (for China), Brother Industries, Ltd PT-E850TKW (for Koria), Brother Industries, Ltd PT-E850TKW (for Tiwan), Brother Industries, Ltd PT-E850TKW (for Thailand), Brother Industries, Ltd PT-E850TKW (for UAE), Brother Industries, Ltd PT-E850TKW (for Vietnum), Brother Industries, Ltd PJ-773, Brother Industries, Ltd RJ-3150, Brother Industries, Ltd RJ-3050, Brother Industries, Ltd RJ-3150Ai, Brother Industries, Ltd RJ-3050Ai, Brother Industries, Ltd PT-E550W (for US, EU), Brother Industries, Ltd PT-E550W (for China), Brother Industries, Ltd PT-E550W (for Koria), Brother Industries, Ltd PT-E550W (for Vietnum), Brother Industries, Ltd PT-E550W (for Russia), Brother Industries, Ltd PT-E550W (for Tiwan, Hongkong), Brother Industries, Ltd PT-E550W (for Thailand), Brother Industries, Ltd PT-P750W, Brother Industries, Ltd TD-2120N, Brother Industries, Ltd TD-2130N, Brother Industries, Ltd TD-4420TN, Brother Industries, Ltd TD-4520TN, Brother Industries, Ltd TD-4650TNWB, Brother Industries, Ltd TD-4650TNWBR, Brother Industries, Ltd TD-4750TNWB, Brother Industries, Ltd TD-4750TNWBR, Brother Industries, Ltd RJ-2035B, Brother Industries, Ltd RJ-3035B, Brother Industries, Ltd TJ-4020TN, Brother Industries, Ltd TJ-4010TN, Brother Industries, Ltd TJ-4005DN, Brother Industries, Ltd TJ-4021TN, Brother Industries, Ltd TJ-4021TNR, Brother Industries, Ltd TJ-4121TN, Brother Industries, Ltd TJ-4121TNR, Brother Industries, Ltd TJ-4120TN, Brother Industries, Ltd TJ-4420TN, Brother Industries, Ltd TJ-4520TN, Brother Industries, Ltd TJ-4620TN, Brother Industries, Ltd TJ-4422TN, Brother Industries, Ltd TJ-TJ-4522TN, Brother Industries, Ltd VC-500W, Toshiba Tec e-STUDIO301DN, Toshiba Tec e-STUDIO302DNF, Konica Minolta, Inc. Bizhub 5020i, Konica Minolta, Inc. Bizhub 5000i, Konica Minolta, Inc. Bizhub 4020i, Konica Minolta, Inc. Bizhub 4000i
- **Weaknesses:** CWE-1391 (Use of Weak Credentials)

## Description

An unauthenticated attacker who knows the target device's serial number, can generate the default administrator password for the device. An unauthenticated attacker can first discover the target device's serial number via CVE-2024-51977 over HTTP/HTTPS/IPP, or via a PJL request, or via an SNMP request.

## CrowdSec analysis

[CVE-2024-51978](https://euvd.enisa.europa.eu/vulnerability/CVE-2024-51978) is a critical vulnerability affecting a wide range of Brother, Toshiba Tec, and Konica Minolta printers and multifunction devices, where an unauthenticated attacker who knows the device's serial number can generate the default administrator password. By leveraging this flaw—potentially in combination with CVE-2024-51977 to obtain the serial number—attackers can gain full administrative access remotely, leading to complete compromise of the device, exposure of sensitive data, and the ability to alter device settings or disrupt operations. This vulnerability poses a significant risk for unauthorized control and lateral movement within enterprise networks.

CrowdSec has been tracking this vulnerability and its exploits since 5th of August 2025.

According to CrowdSec data, while opportunistic exploitation dominates, a portion of threat actors trying to exploit CVE-2024-51978 apply basic targeting methods such as port or service detection. This indicates emerging patterns of selective targeting.
In addition, according to the CrowdSec network, attack volume against CVE-2024-51978 has dipped slightly compared to the previous week. Although still commonly targeted, the decline suggests a cooling-off period. Long-term relevance remains, but attention is waning.

Attackers exploit Brother printers by accessing `/etc/mnt_info.csv` or `/general/status.html` to leak the device's serial number and perform authentication bypass using a generated default admin password. These endpoints are targeted for unauthorized access and login attempts.

## Timeline

- 2025-06-25: CVE Published. CVE-2024-51978 is published to NVD.
- 2025-08-05: Rule Released. CrowdSec releases a rule to detect CVE-2024-51978 exploitation attempts against the CrowdSec Network.
- 2025-08-07: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2024-51978 for the first time.

## References

- https://www.darkreading.com/endpoint-security/millions-brother-printers-critical-unpatchable-bug
- https://support.brother.com/g/b/link.aspx?prod=group2&faqid=faq00100848_000
- https://www.rapid7.com/blog/post/multiple-brother-devices-multiple-vulnerabilities-fixed
- https://github.com/rapid7/metasploit-framework/pull/20349
- https://support.brother.com/g/b/link.aspx?prod=group2&faqid=faq00100846_000
- https://www.toshibatec.com/information/20250625_02.html
- https://www.securityweek.com/new-vulnerabilities-expose-millions-of-brother-printers-to-hacking/
- https://www.konicaminolta.com/global-en/security/advisory/pdf/km-2025-0001.pdf
- https://assets.contentstack.io/v3/assets/blte4f029e766e6b253/blt6495b3c6adf2867f/685aa980a26c5e2b1026969c/vulnerability-disclosure-whitepaper.pdf
- https://support.brother.com/g/b/link.aspx?prod=lmgroup1&faqid=faqp00100620_000
- https://www.bleepingcomputer.com/news/security/brother-printer-bug-in-689-models-exposes-default-admin-passwords/
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-51978.yaml
- https://github.com/sfewer-r7/BrotherVulnerabilities

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2024-51978) follows observed exploitation activity for CVE-2024-51978. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.