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

First published: Wed Dec 04 2024(Updated: )

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.

Credit: ykramarz@cisco.com

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