VULNERABILITY INTELLIGENCE

CVE-2022-20773

CVSS score7.5 HIGH
EPSS probability1.18%
CISA KEVNot currently listed
Published2022-04-21
Last modified2026-06-22
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

A vulnerability in the key-based SSH authentication mechanism of Cisco Umbrella Virtual Appliance (VA) could allow an unauthenticated, remote attacker to impersonate a VA. This vulnerability is due to the presence of a static SSH host key. An attacker could exploit this vulnerability by performing a man-in-the-middle attack on an SSH connection to the Umbrella VA. A successful exploit could allow the attacker to learn the administrator credentials, change configurations, or reload the VA. Note: SSH is not enabled by default on the Umbrella VA.

Weakness classification

  • psirt@cisco.com: CWE-321
  • nvd@nist.gov: CWE-798

Primary references