Risk Letters

Exploited vulnerability

CVE-2025-31161

TLP:CLEAR

CrushFTP Authentication Bypass Vulnerability

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.

Facts

  • Vendor: CrushFTP
  • Product: CrushFTP
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 100 %
  • On CISA's Known Exploited Vulnerabilities list since: 7 April 2025
  • First known exploitation: 7 April 2025
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 28 April 2025
  • Weakness: CWE-305
  • First seen by Risk Letters: 7 April 2025

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD