All vulnerabilities
CVE-2025-31161

CrushFTP Authentication Bypass Vulnerability

CrushFTP CrushFTPNetwork & edge
Open in ThreatlineRecord JSON
CVSS
9.8Critical
ExploitationExploited in the wildAdded to KEV 7 Apr 2025. Known ransomware useCISA KEV
Exploit odds (EPSS)>99.9%Chance of exploitation activity in the next 30 days, higher than 99.9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in10.8.4Also 11.3.1CVE List
Federal deadline28 Apr 2025Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 3 Apr 2025, 00:00 UTCPublishedCVE List
  2. 7 Apr 2025Added to CISA KEVCISA KEV
  3. 18 May 2025Exploit code publicExploit-DB

Public exploit code and templates 2

  • Remote exploitCrushFTP 11.3.1 - Authentication Bypass 18 May 2025Exploit-DB
  • Scanner templateCrushFTP - Authentication BypassNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

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.

Text from CVE List

Affected versions 2

  • CrushFTPaffected: 10 before 10.8.4CVE List
  • CrushFTPaffected: 11 before 11.3.1CVE List

References 12