CVE-2026-20046
Cisco IOS XR Software CLI Privilege Escalation Vulnerability
Severity
High 8.8
CVSS 3.1
Exploited
Not listed
EPSS
0.001
3.4th percentile
Discovered by
Vendor
Published by the vendor
Published
Mar 11, 2026
Assigned by cisco
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 affected versions (1)
- Cisco · Cisco IOS XR Software