Permissions, Privileges, and Access Controls in Cisco IOS XR - CVE-2026-20046
Published: March 16, 2026
Vulnerability identifier: #VU124029
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-20046
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS XR
Cisco IOS XR
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect mapping of a command to task groups within the source code, which leads to security restrictions bypass and privilege escalation.
How to mitigate CVE-2026-20046
Install updates from vendor's website.