CVE-2025-54309
KEV CrushFTP Unprotected Alternate Channel Vulnerability
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.
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.
CVSS 3.1 vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HPublishedJul 18, 2025
Last modifiedJun 17, 2026
Added to KEVJul 22, 2025
Remediation dueAug 12, 2025
References
- bleepingcomputer.com/news/security/crushftp-zero-day-exploited-in-attacks-to-gain-admin-access-on-servers/Press/Media Coverage
- crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025Vendor Advisory
- rapid7.com/blog/post/crushftp-zero-day-exploited-in-the-wild/Press/Media Coverage
- vicarius.io/vsociety/posts/cve-2025-54309-detect-crushftp-vulnerabilityThird Party Advisory
- vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnerabilityThird Party Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-54309US Government Resource
0 recent articles mention this CVE
84
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 441 days
- CVSS
- 9.0 CRITICAL
- EPSS (30-day exploit probability)
- 93.5% · top 1% of all CVEs
- Weakness
- CWE-420
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.