CVE-2022-20676 Cisco IOS XE Software Tool Command Language Privilege Escalation Vulnerability
An authenticated local attacker can escalate privileges to root by loading malicious Tcl code in Cisco IOS XE due to insufficient input validation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-20676?
CVE-2022-20676 is a medium-severity vulnerability in Cisco Ios Xe, published on 15 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2022-20676?
It affects 1 product.
Products include Cisco Ios Xe.
How do I fix CVE-2022-20676?
No fix has been published for CVE-2022-20676 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-20676 being exploited?
There is no known exploitation of CVE-2022-20676 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios Xe
- CVE-2023-20198 Cisco IOS XE Web UI Privilege Escalation
- CVE-2018-0151 Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution
- CVE-2023-20273 Cisco IOS XE Web UI Command Injection
- CVE-2025-20188 Hardcoded credentials in Cisco IOS XE Software
- CVE-2021-34770 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability
Sources
Also known as GHSA-mm24-m3qx-g7j8.