CVE-2024-20397
Cisco NX-OS Software Image Verification Bypass Vulnerability
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
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco NX-OS Software | Routing & Switching | cna-assigner |
| Cisco | Cisco Unified Computing System (UCS) | Other Products | cna-assigner |
Vendor-reported products (3)
- Cisco · Cisco NX-OS Software
- Cisco · Cisco NX-OS System Software in ACI Mode
- Cisco · Cisco Unified Computing System (Managed)
Vendor advisory
cisco-sa-nxos-image-sig-bypas-pQDRQvjL
Cisco NX-OS Software Image Verification Bypass Vulnerability
Cisco’s rating: High (advisory CVSS 5.2) · Published Dec 4, 2024 · updated Apr 7, 2025 (revision 2.2)
Bug IDs: CSCwh76163 , CSCwh76166 , CSCwj35846 , CSCwm47438 , CSCwn11901
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from