Medium severityNVD Advisory· Published Nov 10, 2026

CVE-2026-40669

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.

Affected products

AMD/Secure Encrypted Virtualization Firmwarellm-fuzzy

Patches

Vulnerability mechanics

References

www.amd.com/en/resources/product-security/bulletin/AMD-SB-3038.htmlnvd

News mentions

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