Arbitrary code execution via SMM input validation
Published Feb 11, 2025 · Updated Feb 26, 2026
Improper input validation in affected AMD processor SMM handlers allows local users to overwrite SMRAM and execute arbitrary code. The handlers accept inadequately validated input before writing into protected System Management RAM; AMD has not disclosed the specific entry points or fields. Exploitation requires high local privileges and high-complexity conditions, and successful execution crosses into the isolated SMM context.
Summary
What happened
Improper input validation in affected AMD processor SMM handlers allows local users to overwrite SMRAM and execute arbitrary code. The handlers accept inadequately validated input before writing into protected System Management RAM; AMD has not disclosed the specific entry points or fields. Exploitation requires high local privileges and high-complexity conditions, and successful execution crosses into the isolated SMM context.
The record
- CVE
- CVE-2023-31342
- Published
- Feb 11, 2025
- Updated
- Feb 26, 2026
- Vendor
- Advanced Micro Devices, Inc.
- Product
- AMD Ryzen™ 7000 Series Desktop Processors
- Classifications
- CWE-1220, T1068
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Feb 11, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 2026Record 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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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