CrushFTP Authentication Bypass Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

CRITICAL

9.8 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

EPSS Prediction

86.21 %

Predictive Probability

Percentile Rank

99.4 th

Documented as more likely to be exploited than 99.4% of known CVEs.

Detection Date

Apr 07, 2025

Remediation Due

Apr 28, 2025

CISA Catalog Active

Threat Analysis

CrushFTP contains an authentication bypass vulnerability in the HTTP authorization header that allows a remote unauthenticated attacker to authenticate to any known or guessable user account (e.g., crushadmin), potentially leading to a full compromise.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

External Intelligence

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

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2025-31161