Actively exploited in the wild
CrushFTP Unprotected Alternate Channel Vulnerability
CrushFTP - CrushFTP · Listed in the CISA KEV since 2025-07-22. This indicates confirmed attacks in production environments.
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.
CVE-2025-54309
CriticalCVSS 9.0KEVSummary
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.
Risk Assessment
An attacker can gain full control over the CrushFTP server, potentially leading to data confidentiality and integrity breaches and service disruption.
Recommendation
Immediately upgrade CrushFTP to version 10.8.5 or 11.3.4_23 (or later) and enable the DMZ proxy feature if possible.
Other vulnerabilities in CrushFTP
See all- CVE-2025-31161CriticalActively exploited
CrushFTP 10 before 10.8.4 and 11 before 11.3.1 allows authentication bypass and takeover of the crushadmin account (unless a DMZ proxy instance is used), as exploited in the wild in March and April 2025. The vulnerability is a race condition in the AWS4-HMAC (S3-compatible) authorization method of the HTTP component. The server first verifies user existence via login_user_pass() without password, authenticating the session through HMAC verification. Sending a mangled AWS4-HMAC header stabilizes the attack, causing an index-out-of-bounds error that prevents session cleanup.
- CVE-2017-14035Critical
CrushFTP versions 8.x before 8.2.0 have a serialization vulnerability.
Original NVD description (English source)
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.