Local TEE data disclosure via uninitialized ASP variable
Published Sep 6, 2025 · Updated Sep 8, 2025
Information disclosure in AMD Secure Processor firmware allows local users to read leftover TEE-driver data on affected AMD processors and GPUs. An uninitialized ASP variable returns residual data from a trusted execution environment driver instead of initialized output. Exploitation requires local low-privileged access and high-complexity conditions; the reported consequence is limited to confidentiality.
Summary
What happened
Information disclosure in AMD Secure Processor firmware allows local users to read leftover TEE-driver data on affected AMD processors and GPUs. An uninitialized ASP variable returns residual data from a trusted execution environment driver instead of initialized output. Exploitation requires local low-privileged access and high-complexity conditions; the reported consequence is limited to confidentiality.
The record
- CVE
- CVE-2023-31326
- Published
- Sep 6, 2025
- Updated
- Sep 8, 2025
- Vendor
- Advanced Micro Devices, Inc.
- Product
- AMD Instinct™ MI250
- Classifications
- CWE-457, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 6, 2025CVE publishedPublication date reported by the CVE source.
- Sep 8, 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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
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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