July 22, 2025 · Applied Cybernetics Group
CVE-2025-54309 — CrushFTP CrushFTP
CrushFTP Unprotected Alternate Channel Vulnerability
- Added to KEV
2025-07-22- Federal due date
2025-08-12- Vendor
- CrushFTP
- Product
- CrushFTP
- EPSS
- 99.8th percentile (score 0.920, as of
2026-07-13) - NVD CVSS v3.1
- 9 (CRITICAL)
- Ransomware use
- Unknown
- ATT&CK
- T1021 , T1068 , T1567 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-54309
CISA short description
CrushFTP contains an unprotected alternate channel vulnerability. When the DMZ proxy feature is not used, mishandles AS2 validation and consequently allows remote attackers to obtain admin access via HTTPS.
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.
NVD 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.