Vulnerability details
CVE-2025-54309
Actively exploited
CrushFTP CrushFTP
CVSS 3.1
9.0Critical
Remedy
Required action (CISA): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due: 2025-08-12)
Versions not listed as affected in the CVE record:
- CrushFTP — version 10.8.5 and later
- CrushFTP — version 11.3.4_23 and later
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.0Critical | 3.1 | CVEProject cvelistV5 (CNA) (mitre) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| CrushFTP | CrushFTP | 10 ≤ v < 10.8.5 | CVEProject cvelistV5 (CNA) |
| CrushFTP | CrushFTP | 11 ≤ v < 11.3.4_23 | CVEProject cvelistV5 (CNA) |
References and advisories
6- https://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025
- https://www.rapid7.com/blog/post/crushftp-zero-day-exploited-in-the-wild/
- https://www.bleepingcomputer.com/news/security/crushftp-zero-day-exploited-in-attacks-to-gain-admin-access-on-servers/
- https://www.vicarius.io/vsociety/posts/cve-2025-54309-detect-crushftp-vulnerability
- https://www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnerability
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-54309 government-resource
Kolun on Telegram @kolunsec
Exploited CVEs, key news and a daily digest
Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.
Details
- Published
- 2025-07-18
- Last updated
- 2025-10-22
- State
- Published
- Assigner (CNA)
- mitre
- Kolun priority
- 79 · High
CISA KEV catalog
- Date added
- 2025-07-22
- Due date
- 2025-08-12
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
93.47%
Probability of exploitation in 30 days
99.8%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-420Unprotected Alternate Channel