CVE-2025-54309
Critical 9.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- CrushFTP Unprotected Alternate Channel Vulnerability
- Added to catalog
- Remediation due date (US federal)
- 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.
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.
Metrics
- CVSS 3.1
-
9.8 (CRITICAL)
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 93% (percentile: 100) as of 1 November 2026
- CWE
- CWE-420
Affected products
crushftp: crushftp
References
- https://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025 Vendor Advisory
- https://www.bleepingcomputer.com/news/security/crushftp-zero-day-exploited-in-a… Press/Media Coverage
- 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-vulnerabi… Third Party Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnera… Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025… US Government Resource