CVE-2025-62621

Published Nov 10, 2026 CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
Expected behavior violation in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to bypass Reverse Map Table (RMP) protections, potentially resulting in a loss of Secure Encrypted Virtualization-Secure Nested Paging (SEV-SNP) guest memory integrity.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Expected Behavior Violation in AMD SEV Firmware Enables RMP Bypass
Type Values Removed Values Added
First Time appeared Amd
Amd epyc 9005 Series Processors
Amd epyc Embedded 9005 Series Processors
Vendors & Products Amd
Amd epyc 9005 Series Processors
Amd epyc Embedded 9005 Series Processors
Type Values Removed Values Added
Title Expected Behavior Violation in AMD SEV Firmware Enables RMP Bypass
Type Values Removed Values Added
Title Malicious Hypervisor Can Bypass RMP Protections in AMD SEV Firmware
Type Values Removed Values Added
Title Malicious Hypervisor Can Bypass RMP Protections in AMD SEV Firmware
Type Values Removed Values Added
Description Expected behavior violation in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to bypass Reverse Map Table (RMP) protections, potentially resulting in a loss of Secure Encrypted Virtualization-Secure Nested Paging (SEV-SNP) guest memory integrity.
Weaknesses CWE-440
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
AMD
Published
Updated
Nov 12, 2026, 11:40 PM
Reserved
Oct 16, 2025, 8:46 PM
Status
Awaiting Analysis
Published
Nov 10, 2026, 10:17 PM
Modified
Nov 13, 2026, 12:20 AM