Improper authentication in CrushFTP - CVE-2025-54309

 

Improper authentication in CrushFTP - CVE-2025-54309

Published: July 21, 2025 / Updated: September 12, 2025


Vulnerability identifier: #VU113076
CSH Severity: Critical
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-54309
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability: The vulnerability is being exploited in the wild

Vulnerability details

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to improper input validation in AS2 file transfer protocol. A remote attacker can obtain the administrator's session and gain unauthorized access to the server. 



Affected software

CrushFTP

How to mitigate CVE-2025-54309

Install updates from vendor's website.

CrushFTP - addressed in versions 10.8.5, 11.3.4

Links to Public Exploits and PoC-codes

External References

Related Security Bulletins