VULNERABILITY INTELLIGENCE

CVE-2022-20789

CVSS score4.9 MEDIUM
EPSS probability1.43%
CISA KEVNot currently listed
Published2022-04-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Description

A vulnerability in the software upgrade process of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to write arbitrary files on the affected system. This vulnerability is due to improper restrictions applied to a system script. An attacker could exploit this vulnerability by using crafted variables during the execution of a system upgrade. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges.

Weakness classification

  • psirt@cisco.com: CWE-73
  • nvd@nist.gov: CWE-610

Primary references