Vulnerability in Cisco Nx-Os Software
CVE-2024-20397
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.2 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Cisco Nx-Os Software — versions 8.2(5), 7.3(5)D1(1), 8.4(2)
- Cisco Nx-Os System Software In Aci Mode — versions 14.1(1j), 14.0(3d), 14.1(1k)
- Cisco Unified Computing System (Managed) — versions 4.0(4c), 4.0(2b), 4.1(2a)
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2024-20397?
- CVE-2024-20397 is a medium-severity vulnerability in Cisco Nx-Os Software, classified under Improper Access Control. CVSS score: 5.2/10. Published 2024-12-04.
- How severe is CVE-2024-20397?
- Medium severity. CVSS v3 base score is 5.2 out of 10.