Actively exploited · Published Jul 10, 2025 · Assigned by mitre

CVE-2025-47812

Critical 10.0 Exploited

In plain English

A critical-severity security flaw in Wing FTP Server from wftpserver. Attackers are actively exploiting it in the wild (listed by CISA on July 14, 2025). The chance it is exploited in the next 30 days is estimated at 93.9% (higher than 99.8% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei, public proof-of-concept code. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)93.9%top 0.2% of all CVEs

Exploited in the wildYesCISA KEV since Jul 14, 2025

Attack tooling3Metasploit, Nuclei, Public PoC

CISA guidance

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Federal agencies must remediate by Aug 4, 2025.

Official 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.

Affected products (as reported)

Vendor	Product	Versions
wftpserver	Wing FTP Server	0 – before 7.4.4

Weakness: CWE-158 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

In plain English

CISA guidance

Official description

Affected products (as reported)

References