CVE-2025-47812
Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2025-07-14. Federal due date: 2025-08-04.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Wing FTP Server 7.4.3 - Unauthenticated Remote Code Execution (RCE)2025-07-02 · remote · multiple
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Wftpserver | Wing Ftp Server | before 7.4.4 |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- https://www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/
- https://www.vicarius.io/vsociety/posts/cve-2025-47812-detection-script-remote-code-execution-vulnerability-in-wing-ftp-server
- https://www.vicarius.io/vsociety/posts/cve-2025-47812-mitigation-script-remote-code-execution-vulnerability-in-wing-ftp-server
- https://www.wftpserver.com
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47812
- https://www.huntress.com/blog/wing-ftp-server-remote-code-execution-cve-2025-47812-exploited-in-wild