CrushFTP Unprotected Alternate Channel Vulnerability
CrushFTP — CrushFTP
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.
9.0
94.7%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- Published
- Jul 18, 2025
- Modified
- Jun 17, 2026
- Added to KEV
- Jul 22, 2025
- Federal patch due
- Aug 12, 2025
CISA 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.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
7 foundWeaponization
Public repositories whose name or description references CVE-2025-54309, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
- watchtowrlabs/watchTowr-vs-CrushFTP-Authentication-Bypass-CVE-2025-54309★ 28
updated Apr 5, 2026
- foregenix/CVE-2025-54309★ 2
Exploitation scripts for the CrushFTP CVE-2025-54309: vulnerability
updated Mar 9, 2026
- 0xLittleSpidy/CVE-2025-54309★ 1
updated Jan 27, 2026
- whisperer1290/CVE-2025-54309__Enhanced_exploit★ 1
updated Jun 26, 2026
- blueisbeautiful/CVE-2025-54309★ 0
CrushFTP AS2 Authentication Bypass
updated Aug 30, 2025
- chin-tech/CrushFTP_CVE-2025-54309★ 0
updated Sep 13, 2025
- Smileyface101/CrushFTP-AS2-Bypass-Research-CVE-2025-54309★ 0
Findings & july race with 0day in wild
updated Jul 3, 2026
References
Frequently asked questions
What is CVE-2025-54309?
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.
How severe is CVE-2025-54309?
CVE-2025-54309 has a CVSS base score of 9.0 out of 10 (CVSS 3.1).
Is CVE-2025-54309 actively exploited in the wild?
Yes. CVE-2025-54309 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Jul 22, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-54309?
94.7% - meaning FIRST.org's EPSS model estimates a 94.7% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2025-54309?
We found 7 public GitHub repositories referencing CVE-2025-54309, though none matched a known Nuclei template or Metasploit module at last check. Review each one before relying on it - see the proof-of-concept section above.
What type of vulnerability is CVE-2025-54309?
CVE-2025-54309 is classified under CWE-420 (CWE-420 Unprotected Alternate Channel).
Cross-checked against
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