# CVE-2025-47812: Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability

> CVE-2025-47812: Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability. CVSS 10.0 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2025-47812
Last updated: 2026-06-17T09:28:43Z

- Published: 2025-07-10 00:00 UTC · Updated: 2026-06-17 09:28 UTC · Assigner: mitre
- CVSS: 10.0 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS: 93.9%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-07-14, federal due date 2025-08-04, ransomware use: Unknown
- CWE: CWE-158

## 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.

## CISA 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.

## Affected vendors and products

- wftpserver: Wing FTP Server

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-47812)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-47812)
- [https://www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/](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-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.vicarius.io/vsociety/posts/cve-2025-47812-mitigation-script-remote-code-execution-vulnerability-in-wing-ftp-server)
- [https://www.wftpserver.com](https://www.wftpserver.com)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-47812 · Markdown: https://rewindex.com/cve/CVE-2025-47812.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-47812 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:18.887Z