CVE-2021-26316
HIGH
7.8
CVSS Score
Published: January 10, 2023 at 07:46 PM UTC
Updated: June 17, 2026 at 03:43 AM UTC
298 products affected across 1 vendorEpyc 7663 FirmwareEpyc 7713P FirmwareEpyc 7413 Firmware
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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit
Description
Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) arbitrary code execution.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
Vendor Advisory
Source: [email protected]
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031Vendor Advisory
Source: [email protected]
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.8HIGHCISA-ADP
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20
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