CVE-2024-20397 Cisco NX-OS Software Image Verification Bypass Vulnerability
An attacker with physical or local admin access can bypass image signature verification to load unverified software on Cisco NX-OS devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-20397?
CVE-2024-20397 is a medium-severity vulnerability in Cisco NX-OS Software, published on 4 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-284
Which versions are affected by CVE-2024-20397?
How do I fix CVE-2024-20397?
No fix has been published for CVE-2024-20397 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-20397 being exploited?
There is no known exploitation of CVE-2024-20397 in the wild and no public exploit code.
Sources
Also known as GHSA-p5rq-7r6m-x7rf.