CVE-2025-54309 (GCVE-0-2025-54309)

Vulnerability from cvelistv5 – Published: 2025-07-18 00:00 – Updated: 2025-10-21 22:45
VLAI CISA Previdian
Summary
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.
Severity
9 (Critical)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-15 18:50 UTC
CWE
  • CWE-420 - Unprotected Alternate Channel
Assigner
References
Impacted products
Vendor Product Version
CrushFTP CrushFTP Affected: 10 , < 10.8.5 (custom)
Affected: 11 , < 11.3.4_23 (custom)
    cpe:2.3:a:crushftp:crushftp:*:*:*:*:*:*:*:*
    cpe:2.3:a:crushftp:crushftp:*:*:*:*:*:*:*:*
Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: e555ce40-1daa-41e3-bd27-dbcd5266490f

Vulnerability ID: CVE-2025-54309

Status: Confirmed

Status Updated: 2025-07-22 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2025-07-22
Asserted: 2025-07-22
Scope
Notes: CrushFTP Unprotected Alternate Channel Vulnerability | Affected: CrushFTP / CrushFTP | 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. | Due date: 2025-08-12 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025 ; https://nvd.nist.gov/vuln/detail/CVE-2025-54309
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-420
Feed CISA Known Exploited Vulnerabilities Catalog
Product CrushFTP
Due Date 2025-08-12
Date Added 2025-07-22
Vendorproject CrushFTP
Vulnerabilityname CrushFTP Unprotected Alternate Channel Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-10-02 08:09 CEST | Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: cea243a6-8a50-4227-9974-c5ad32820f8a

Vulnerability ID: CVE-2025-54309

Status: Confirmed

Status Updated: 2026-06-01 12:37 CEST

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: 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... | Affected: CrushFTP / CrushFTP | CVSS: 9.0 (CRITICAL) | EPSS: 0.94905 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title 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...
Cve Id CVE-2025-54309
Vendor CrushFTP
Ghsa Id None
Product CrushFTP
Added Date 2026-06-01T10:37:11.050Z
Cvss Score 9.0
Epss Score 0.94905
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.99859
Used In Malware unknown
Vulnerability Id CVE-2025-54309
Ahead Of Cisa Kev 
{
  "count": 1,
  "unit": "day"
}
Not Yet In Cisa Kev False
References
Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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