VULNERABILITY INTELLIGENCE

CVE-2022-20676

CVSS score5.1 MEDIUM
EPSS probability0.28%
CISA KEVNot currently listed
Published2022-04-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N

Description

A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root-level privileges. This vulnerability is due to insufficient input validation of data that is passed into the Tcl interpreter. An attacker could exploit this vulnerability by loading malicious Tcl code on an affected device. A successful exploit could allow the attacker to execute arbitrary commands as root. By default, Tcl shell access requires privilege level 15.

Weakness classification

  • psirt@cisco.com: CWE-250
  • nvd@nist.gov: CWE-20

Primary references