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.
Scoring
- CVSS: 9 (CRITICAL, 3.1)
- EPSS exploitation probability: Not yet available
- EPSS percentile: Not yet available
CISA KEV status
- Added to KEV: 2025-07-22
- Remediation due date: 2025-08-12
- Known ransomware campaign use: Unknown
Weakness types (CWE)
- CWE-420
References
- https://www.bleepingcomputer.com/news/security/crushftp-zero-day-exploited-in-attacks-to-gain-admin-access-on-servers/
- https://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025
- https://www.rapid7.com/blog/post/crushftp-zero-day-exploited-in-the-wild/
- https://www.vicarius.io/vsociety/posts/cve-2025-54309-detect-crushftp-vulnerability
- https://www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnerability
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-54309
More from CrushFTP
- CVE-2025-31161 — CrushFTP
- CVE-2024-4040 — CrushFTP
More CRITICAL-severity vulnerabilities · All exploited vulnerabilities