Nortek Linear eMerge E3-Series - RCE (CVE-2022-31499)

CVE-2022-31499 is a critical vulnerability in Nortek Linear eMerge E3-Series devices prior to version 0.32-08f, allowing unauthenticated attackers to inject operating system commands via the ReaderNo parameter. This flaw, stemming from an incomplete fix for a previous vulnerability (CVE-2019-7256), could enable remote attackers to execute arbitrary commands, potentially leading to full system compromise.

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

CrowdSec network data shows that most actors exploiting CVE-2022-31499 rely on broad, untargeted scans with minimal filtering. The activity is largely automated and opportunistic in nature. Additionally, according to week-over-week analysis by CrowdSec, exploitation of CVE-2022-31499 is surging. Attack volumes are spiking well above historical norms, indicating widespread and escalating interest from threat actors. CVE-2022-31499 is currently experiencing high visibility and active exploitation across the internet.

Attackers exploit the ReaderNo parameter in /card_scan.php to inject shell commands, enabling remote code execution on Nortek Linear eMerge E3-Series devices.