Known exploited vulnerability
CVE-2025-47812
The short answer
CVE-2025-47812 affects wftpserver Wing FTP Server and is rated critical (CVSS 10.0). CISA added it to the Known Exploited Vulnerabilities catalog on 2025-07-14: attackers are using it, so patch it first.
What it is
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.
Weakness: CWE-158.
Severity
10.0 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Jul 14, 2025
Federal due date Aug 4, 2025
EPSS, next 30 days
94%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
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 products
Wing FTP Server. NVD's record lists the exact affected versions.
References
- www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/ ExploitThird Party Advisory
- www.vicarius.io/vsociety/posts/cve-2025-47812-detection-script-remote-code-execution-vulnerability-in-wing-ftp-server Third Party Advisory
- www.vicarius.io/vsociety/posts/cve-2025-47812-mitigation-script-remote-code-execution-vulnerability-in-wing-ftp-server MitigationThird Party Advisory
- www.wftpserver.com Product
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-47812 US Government Resource
- www.huntress.com/blog/wing-ftp-server-remote-code-execution-cve-2025-47812-exploited-in-wild ExploitThird Party Advisory
Questions
Is CVE-2025-47812 being exploited?
Yes. CISA added CVE-2025-47812 to its Known Exploited Vulnerabilities catalog on 2025-07-14, with a federal remediation due date of 2025-08-04.
How do I fix CVE-2025-47812?
CISA's 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.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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