How to check if you are exposed to CVE-2025-54309
- Find every CrushFTP system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
- Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
- Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2025-54309.
US federal agencies had to fix this by 2025-08-12. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.
Affected versions
Versions the National Vulnerability Database lists as vulnerable to CVE-2025-54309. Check the vendor advisory for the exact fixed builds before you sign anything off.
| Product | Vulnerable versions |
|---|---|
| Crushftp | from 10.0.0 before 10.8.5; from 11.0.0 before 11.3.4_23 |
Timeline
- · Published in the National Vulnerability Database
- · Added to CISA's Known Exploited Vulnerabilities catalog, 4 days after it was published
- · Fix-by date for US federal agencies, passed 446 days ago
Vendor advisories and fixes
Weakness type
More exploited CrushFTP vulnerabilities
CISA lists 3 exploited CrushFTP vulnerabilities. The closest matches:
Keep going
Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.