What’s Vulnerable › Vulnerabilities
CVE-2026-20046: Cisco IOS XR Software CLI Privilege Escalation Vulnerability
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-03-11 · updated 2026-07-01
- Weakness: CWE-264
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.
Affected products
- Cisco IOS XR Software: before 25.2.2 — fixed in 25.2.2
How to fix
Upgrade to a fixed version: Cisco IOS XR Software 25.2.2. Check the vendor advisory for mitigations.
References
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