CVE-2026-40669

medium

Description

An off-by-one error in AMD Secure Encrypted Virtualization (SEV) firmware could allow an attacker with hypervisor access to corrupt the Reverse Map Table (RMP) table, potentially resulting in loss of guest memory integrity.

References

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3038.html

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-123041

Details

Source: Mitre, NVD

Published: 2026-11-10

Updated: 2026-11-13

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: High

CVSS v4

Base Score: 4

Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N