CVE-2022-20676: Cisco IOS XE Software Tool Command Language Privilege Escalation Vulnerability
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.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2022-20676?
CVE-2022-20676 is a vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS XE Software.
What is the severity of CVE-2022-20676?
The severity of CVE-2022-20676 is high.
How does CVE-2022-20676 affect Cisco IOS XE Software?
CVE-2022-20676 allows an authenticated, local attacker to escalate from privilege level 15 to root-level privileges in Cisco IOS XE Software.
What is the CWE classification of CVE-202-20676?
CVE-202-20676 is classified under CWE-20 (Improper Input Validation) and CWE-250 (Execution with Unnecessary Privileges).
How can I fix CVE-2022-20676?
To fix CVE-2022-20676, apply the necessary updates and patches provided by Cisco.