CVE-2025-54507

Improper Validation of Input in AMD SEV Firmware Allows Multiple RMP Entries, Compromising Guest Integrity

Published Nov 12, 2026 CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
Improper validation of consistency within input in AMD SEV (Secure Encrypted Virtualization) firmware could allow an attacker with administrative privileges to create multiple RMP entries for the same guest physical address, potentially resulting in loss of guest 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 Improper Validation of Input in AMD SEV Firmware Allows Multiple RMP Entries, Compromising Guest Integrity
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
Description Improper validation of consistency within input in AMD SEV (Secure Encrypted Virtualization) firmware could allow an attacker with administrative privileges to create multiple RMP entries for the same guest physical address, potentially resulting in loss of guest integrity.
Weaknesses CWE-1288
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 13, 2026, 12:16 AM
Reserved
Jul 23, 2025, 3:01 PM
Status
Awaiting Analysis
Published
Nov 12, 2026, 8:18 PM
Modified
Nov 13, 2026, 2:18 AM