CVE-2024-20397 MEDIUM

CVE-2024-20397: Cisco NX-OS Software Image Verification Bypass Vulnerability

Vendor Cisco
Product Cisco NX-OS Software
Weakness CWE-284
Published December 4, 2024
Last update April 8, 2025

CVSS base score

5.2/10
Attack vector Physical
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity High

CVSS vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

What the vulnerability does

01Description

A vulnerability in the bootloader of Cisco NX-OS Software could allow an unauthenticated attacker with physical access to an affected device, or an authenticated, local attacker with administrative credentials, to bypass NX-OS image signature verification.  This vulnerability is due to insecure bootloader settings. An attacker could exploit this vulnerability by executing a series of bootloader commands. A successful exploit could allow the attacker to bypass NX-OS image signature verification and load unverified software.

Key dates

02Disclosure timeline

December 4, 2024 CVE published
April 8, 2025 Record updated