What is CVE-2023-20236?

CVE-2023-20236 is a medium-severity vulnerability in Cisco 8201, classified under Improper Verification of Cryptographic Signature. CVSS score: 6.7/10. Published 2023-09-13.

How severe is CVE-2023-20236?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Vulnerability in Cisco 8201

CVE-2023-20236

A vulnerability in the iPXE boot function of Cisco IOS XR software could allow an authenticated, local attacker to install an unverified software image on an affected device. This vulnerability is due to insufficient image verification. An attacker could exploit this vulnerability by manipulating the boot parameters for image verification during the iPXE boot process on an affected device. A successful exploit could allow the attacker to boot an unverified software image on the affected device.

EPSS: 0.001 (1.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

psirt@cisco.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-20236?: CVE-2023-20236 is a medium-severity vulnerability in Cisco 8201, classified under Improper Verification of Cryptographic Signature. CVSS score: 6.7/10. Published 2023-09-13.
How severe is CVE-2023-20236?: Medium severity. CVSS v3 base score is 6.7 out of 10.