Vulnerability Description
CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS, as exploited in the wild in July 2025.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Crushftp | Crushftp | >= 10.0.0, < 10.8.5 |
Related Weaknesses (CWE)
References
- https://www.bleepingcomputer.com/news/security/crushftp-zero-day-exploited-in-atPress/Media Coverage
- https://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025Vendor Advisory
- https://www.rapid7.com/blog/post/crushftp-zero-day-exploited-in-the-wild/Press/Media Coverage
- https://www.vicarius.io/vsociety/posts/cve-2025-54309-detect-crushftp-vulnerabilThird Party Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnerabThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-US Government Resource
FAQ
What is CVE-2025-54309?
CVE-2025-54309 is a vulnerability with a CVSS score of 9.0 (CRITICAL). CrushFTP 10 before 10.8.5 and 11 before 11.3.4_23, when the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS, as explo...
How severe is CVE-2025-54309?
CVE-2025-54309 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-54309?
Check the references section above for vendor advisories and patch information. Affected products include: Crushftp Crushftp.