CVE-2025-47812Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability
Known exploited — Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability
CISA confirmed this vulnerability is used in real attacks on 14.07.2025. Remediation deadline for US federal agencies: 04.08.2025.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://www.wftpserver.com/serverhistory.htm ; https://nvd.nist.gov/vuln/detail/CVE-2025-47812
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.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| wftpserver | Wing FTP Server | < 7.4.4 |
References and patches
- https://www.wftpserver.com Product
- https://www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/ ExploitThird Party Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-47812-mitigation-script-remote-code-execution-vulnerability-i… MitigationThird Party Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-47812-detection-script-remote-code-execution-vulnerability-in… Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47812 US Government Resource
- https://www.huntress.com/blog/wing-ftp-server-remote-code-execution-cve-2025-47812-exploited-in-wild ExploitThird Party Advisory
CPE matches (NVD) (1)
cpe:2.3:a:wftpserver:wing_ftp_server:*:*:*:*:*:*:*:*< 7.4.4