Skip to content
Fencer Vulns
critical 10.0

CVE-2025-47812 kev in the critical feed json

In Wing FTP Server before 7.4.4.

published 2025-07-10 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-21009

cvss
10.0
version 3.1, CNA
cisa kev
Exploited
added 2025-07-14
epss
93.9%
EPSS 93.9% chance of exploitation in 30 days, percentile 99.8%
public exploits
3
Metasploit, Exploit-DB, plus a Nuclei check

Summary

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.

Patch / fix

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.

  • wftpserver Wing FTP Server 7.4.4

Timeline

  1. First public exploit (Metasploit exploit/windows/ftp/wing_ftp_admin_exec)
  2. Published
  3. Added to CISA KEV
  4. CISA SSVC: exploitation active
  5. CISA patch deadline

Known exploited

Added
15 mo ago
Patch by
2025-08-04 (15 mo ago)
Ransomware
Not known
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.
Vendor, product
Wing FTP Server, Wing FTP Server
CISA name
Wing FTP Server Improper Neutralization of Null Byte or NUL Character Vulnerability

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1068 Exploitation for Privilege Escalation exploitation
  • T1059 Command and Scripting Interpreter primary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
15 mo ago

Exploit prediction

93.88% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/multi/http/wingftp_null_byte_rce Wing FTP Server NULL-byte Authentication Bypass (CVE-2025-47812) metasploit exploit, excellent rank, 2025-06-30
  • Metasploit exploit/windows/ftp/wing_ftp_admin_exec Wing FTP Server Authenticated Command Execution metasploit exploit, excellent rank, 2014-06-19
  • EDB-52347 Wing FTP Server 7.4.3 - Unauthenticated Remote Code Execution (RCE) remote, 2025-07-02
  • Nuclei template Wing FTP Server <= 7.4.3 - Remote Code Execution nuclei detection template
  • rcesecurity.com https://www.rcesecurity.com/2025/06/what-the-null-wing-ftp-server-rce-cve-2025-47812/ referenced PoC, tagged "exploit" by a source, unverified
  • huntress.com https://www.huntress.com/blog/wing-ftp-server-remote-code-execution-cve-2025-47812-exploited-in-wild referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

  • wftpserver Wing FTP Server

Classification

Weakness
  • CWE-158 Improper Neutralization of Null Byte or NUL Character

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.