cisco-sa-iosxr-privesc-bF8D5U4W — Cisco IOS XR Software CLI Privilege Escalation Vulnerabilities

Multiple vulnerabilities in Cisco IOS XR Software could allow an authenticated, local attacker to execute commands as root on an underlying operating system or gain full administrative control of an affected device. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Cisco has released software updates that address these vulnerabilities. A workaround is available for one of the vulnerabilities. This advisory is part of the March 2026 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2026 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75772"].

CVE-2026-20046 — Cisco IOS XR Software CLI Privilege Escalation Vulnerability

Affected: Cisco IOS XR Software

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.

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cisco-sa-iosxr-privesc-bF8D5U4W — Cisco IOS XR Software CLI Privilege Escalation Vulnerabilities

CVE-2026-20046 — Cisco IOS XR Software CLI Privilege Escalation Vulnerability