CVE-2026-20046
Cisco IOS XR Software CLI Privilege Escalation Vulnerability
Description
A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local attacker to elevate privileges and gain full administrative control of an affected device. This vulnerability is due to incorrect mapping of a command to task groups within the source code. An attacker with a low-privileged account could exploit this vulnerability by using the CLI command to bypass the task group–based checks. A successful exploit could allow the attacker to elevate privileges and perform actions on an affected device without authorization checks.
Weakness: CWE-264
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco IOS XR Software | Routing & Switching | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco IOS XR Software
Vendor advisory
cisco-sa-iosxr-privesc-bF8D5U4W
Cisco IOS XR Software CLI Privilege Escalation Vulnerabilities
Cisco’s rating: High (advisory CVSS 8.8) · Published Mar 11, 2026
Bug IDs: CSCwp27221 , CSCwp30135 , CSCwp30142 , CSCwp30146 , CSCwp30149 , CSCwp32614 , CSCwp32629 , CSCwp33021 , CSCwp33030 , CSCwp33034 , CSCwp35627 , CSCwp84685 , CSCwp87543 , CSCws24696 , CSCws24717 , CSCws24740
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from