Unrated severityNVD Advisory· Published Mar 11, 2026· Updated Mar 12, 2026
Cisco IOS XR Software CLI Privilege Escalation Vulnerability
CVE-2026-20046
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
2- Cisco/Cisco IOS XR Softwarev5Range: 6.6.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1News mentions
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