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.
Published 2023-09-13 17:15:10
Updated 2024-01-25 17:15:40
View at NVD,   CVE.org

Products affected by CVE-2023-20236

Exploit prediction scoring system (EPSS) score for CVE-2023-20236

0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-20236

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.7
MEDIUM CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
N/A
N/A
Cisco:cisco-sa-iosxr-ipxe-sigbypass-pymfyqgB 2024-03-13
7.8
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
NIST
6.7
MEDIUM CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
0.8
5.9
Cisco Systems, Inc.

CWE ids for CVE-2023-20236

References for CVE-2023-20236

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