# CVE-2025-47812: Wing FTP Server - RCE

> Live exploitation tracking for CVE-2025-47812 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-2025-47812

## Key facts

- **Exploitation phase:** Background Noise. Continuous low-level scanning or exploitation attempts are observed, mostly opportunistic and automated.
- **CVSS score:** 10.0
- **Public exploit available:** Yes
- **Affected products:** WFTPServer Wing FTP Server
- **Weaknesses:** CWE-158 (Improper Neutralization of Null Byte or NUL Character)
- **Tags:** file_sharing

## Description

In Wing FTP Server before 7.4.4. the user and admin web interfaces mishandle '\0' bytes, ultimately allowing injection of arbitrary Lua code into user session files. This can be used to execute arbitrary system commands with the privileges of the FTP service (root or SYSTEM by default). This is thus a remote code execution vulnerability that guarantees a total server compromise. This is also exploitable via anonymous FTP accounts.

## CrowdSec analysis

[CVE-2025-47812](https://euvd.enisa.europa.eu/vulnerability/CVE-2025-47812) is a critical remote code execution vulnerability in Wing FTP Server prior to version 7.4.4, where improper handling of null bytes in the web interfaces allows attackers to inject arbitrary Lua code into session files. Exploitation of this flaw can lead to execution of system commands with root or SYSTEM privileges, resulting in complete server compromise, and can even be triggered via anonymous FTP accounts.

CrowdSec has been tracking this vulnerability and its exploits since 16th of July 2025.

According to CrowdSec data, while opportunistic exploitation dominates, a portion of threat actors trying to exploit CVE-2025-47812 apply basic targeting methods such as port or service detection. This indicates emerging patterns of selective targeting.
CrowdSec data also reveals a clear uptick in attacks involving CVE-2025-47812 over the past week. Activity is above the usual baseline, suggesting growing attention from attackers. This may reflect rising awareness, recent exploit releases, or expanded targeting efforts.

Attackers exploit this vulnerability by sending a POST request to `/loginok.html` with a maliciously crafted username, enabling remote code execution on vulnerable Wing FTP Server instances.

## Timeline

- 2025-07-10: CVE Published. CVE-2025-47812 is published to NVD.
- 2025-07-14: CISA KEV. CVE-2025-47812 is added to the Known Exploited Vulnerabilities catalog by CISA.
- 2025-07-16: Rule Released. CrowdSec releases a rule to detect CVE-2025-47812 exploitation attempts against the CrowdSec Network.
- 2025-07-21: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2025-47812 for the first time.
- 2025-08-04: CISA Remediation Deadline. Expiration of the CISA remediation deadline as described in [BOD 22-01](https://www.cisa.gov/news-events/directives/bod-22-01-reducing-significant-risk-known-exploited-vulnerabilities).

## References

- https://www.wftpserver.com
- https://www.huntress.com/blog/wing-ftp-server-remote-code-execution-cve-2025-47812-exploited-in-wild
- https://www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-47812.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2025-47812) follows observed exploitation activity for CVE-2025-47812. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.