CVE-2020-3473

HIGH

Cisco IOS XR - Privilege Escalation

Title source: llm
STIX 2.1

Description

A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local CLI shell user to elevate privileges and gain full administrative control of the device. The vulnerability is due to incorrect mapping of a command to task groups within the source code. An attacker could exploit this vulnerability by first authenticating to the local CLI shell on the device and 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 the device without authorization checks.

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.0004
EPSS Percentile 13.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-264 CWE-863
Status published
Products (1)
cisco/ios_xr 5.0.0 - 7.0.12
Published Sep 04, 2020
Tracked Since Feb 18, 2026