Guest-memory corruption via RMP initialization race
Published Oct 14, 2025 · Updated Oct 14, 2025
Improper access control in AMD SEV-SNP on affected EPYC processors allows local users with admin privilege to corrupt guest memory. The AMD Secure Processor initializes the Reverse Map Table without excluding a racing hypervisor write, allowing the initial RMP content to be manipulated. A malicious hypervisor with administrative privilege must win the initialization race; the reported consequence is loss of guest-memory integrity, not disclosure or interruption.
Summary
What happened
Improper access control in AMD SEV-SNP on affected EPYC processors allows local users with admin privilege to corrupt guest memory. The AMD Secure Processor initializes the Reverse Map Table without excluding a racing hypervisor write, allowing the initial RMP content to be manipulated. A malicious hypervisor with administrative privilege must win the initialization race; the reported consequence is loss of guest-memory integrity, not disclosure or interruption.
The record
- CVE
- CVE-2025-0033
- Published
- Oct 14, 2025
- Updated
- Oct 14, 2025
- Vendor
- Advanced Micro Devices, Inc.
- Product
- AMD EPYC 9005 Series Processors
- Classifications
- CWE-284
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Oct 14, 2025CVE publishedPublication date reported by the CVE source.
- Oct 14, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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