CVE-2025-54309

CrushFTP

Published 18 Jul 2025 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 22 Jul 2025, with a remediation deadline of 12 Aug 2025 for US federal agencies.

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.

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.

References

www.bleepingcomputer.com/news/security/crushftp-zero-day-exploited-in-attacks-to-gain-admin-access-on-servers/ · Press/Media Coverage
www.crushftp.com/crush11wiki/Wiki.jsp?page=CompromiseJuly2025 · Vendor Advisory
www.rapid7.com/blog/post/crushftp-zero-day-exploited-in-the-wild/ · Press/Media Coverage
www.vicarius.io/vsociety/posts/cve-2025-54309-detect-crushftp-vulnerability · Third Party Advisory
www.vicarius.io/vsociety/posts/cve-2025-54309-mitigate-crushftp-vulnerability · Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-54309 · US Government Resource