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Status published
Unknown
CVE-2021-26402
Insufficient bounds checking in ASP (AMD Secure Processor) firmware while...
Vulnerability Description
Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions which may lead to a potential loss of integrity and availability.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
Affected Software
2nd Gen EPYC, 3rd Gen EPYC
Vulnerable Versions:
Various , various
Timeline
Official Publish:
January 10th, 2023
Last Modified:
April 8th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
No vector data available
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.