CVE-2023-20236

MEDIUM

Cisco IOS XR - Privilege Escalation

Title source: llm
STIX 2.1

Description

A vulnerability in the iPXE boot function of Cisco IOS XR software could allow an authenticated, local attacker to install an unverified software image on an affected device. This vulnerability is due to insufficient image verification. An attacker could exploit this vulnerability by manipulating the boot parameters for image verification during the iPXE boot process on an affected device. A successful exploit could allow the attacker to boot an unverified software image on the affected device.

Scores

CVSS v3 6.7
EPSS 0.0001
EPSS Percentile 3.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-345 CWE-347
Status published
Products (1)
cisco/ios_xr < 7.10.1
Published Sep 13, 2023
Tracked Since Feb 18, 2026