OpenSSH Security Update – 23 February 2025

OpenSSH released a security update to fix multiple vulnerabilities affecting OpenSSH version 9.9p1 and prior.

The addressed vulnerabilities could allow the remote attacker to perform denial-of-service attacks or conduct man-in-the-middle attacks and obtain sensitive information from the affected systems.

1. OpenSSH Information Disclosure Vulnerability (CVE-2025-26465):

  • CVSS: 6.8
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: Required
  • Consequences: Obtain Information

2. OpenSSH Denial of Services Vulnerability (CVE-2025-26466):

  • CVSS: 5.9
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Consequences: Denial of Service
Vulnerabilities
  • CVE-2025-26465
  • CVE-2025-26466
Mitigations

The enterprise should deploy this patch as soon as the testing phase is completed and should check with its vendors for updates if any.

OpenSSH Security Advisory

References