CrushFTP Unprotected Alternate Channel Vulnerability (CVE-2025-54309)
Severity: critical · Patch status: unknown · Since 2025-07-22 · CVE-2025-54309
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. CISA added CVE-2025-54309 to its Known Exploited Vulnerabilities catalog on Jul 22, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Aug 12, 2025 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch