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VULNERABILITIES

CVE-2022-20676 Details

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

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-priv-esc-grbtubU CVEVendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-priv-esc-grbtubU [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-20Improper Input Validation[email protected]
CWE-250Execution with Unnecessary Privileges[email protected]

Affected Products

ProductVersions
cisco ios xe
16.12.1z2
17.2.1
17.2.1a
17.2.1r
17.2.1v

CPE

  • cpe:2.3:o:cisco:ios_xe:16.12.1z2:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.2.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.2.1a:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.2.1r:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.2.1v:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.2.2:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.2.3:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.1a:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.1w:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.1x:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.1z:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.2:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.2a:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.3:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.3a:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.4:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.4a:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.4b:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.3.4c:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.4.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.4.1a:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.4.1b:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.4.1c:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.4.2:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.4.2a:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.5.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.5.1a:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios_xe:17.5.1c:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2022-20676
NVD Published Date:
Apr 15, 2022
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2022-20676 Details - Not Deferred