CVE-2026-20046

Cisco IOS XR Software CLI Privilege Escalation Vulnerability

High · published March 11, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
3.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00140 · 3.1th percentile
Published
2026-03-11T16:31Z
EPSS history
Timeline
  • 11 MAR 16:31Z
    Cisco IOS XR Software CLI Privilege Escalation Vulnerability
    cvelistv5