CVE-2025-54309

9.0 CRITICAL CISA KEV - Actively Exploited

Published: July 18, 2025 Modified: November 05, 2025

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://www.bleepingcomputer.com/news/security/crushftp-zero-day-exploited-in-attacks-to-gain-admin-access-on-servers/

Source: cve@mitre.org

Press/Media Coverage

https://www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025

Source: cve@mitre.org

Vendor Advisory

https://www.rapid7.com/blog/post/crushftp-zero-day-exploited-in-the-wild/

Source: cve@mitre.org

Press/Media Coverage

https://www.vicarius.io/vsociety/posts/cve-2025-54309-detect-crushftp-vulnerability

Source: cve@mitre.org

Third Party Advisory

https://www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnerability

Source: cve@mitre.org

Third Party Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-54309

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

6 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.0 / 10.0

EPSS (Exploit Probability)

72.2%

99th percentile

Exploitation Status

Actively Exploited

Remediation due: 2025-08-12

Weaknesses (CWE)

CWE-420

Affected Vendors

crushftp

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