CVE-2022-20676

MediumCVSS 6.7/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.7/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-250CWE-20

Affected software

No affected versions have been published.

Timeline

Published
Apr 15, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2022-20676: Medium severity, CVSS 6.7 | Vulnix