Vulnerability in Wftpserver Wing Ftp Server

CVE-2025-47812

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…

EPSS: 0.929 (99.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

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.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-47812?
CVE-2025-47812 is a critical-severity vulnerability in Wftpserver Wing Ftp Server, classified under CWE-158. CVSS score: 10.0/10. Published 2025-07-10.
How severe is CVE-2025-47812?
Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2025-47812 known to be exploited?
Yes. CVE-2025-47812 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-07-14), indicating it is being actively exploited. 32 public proof-of-concept repositories are indexed.