Home/CVE/Insufficient ID command validation in the SEV Firmware may allow a local authenticated attacker to perform a denial of s
CVE

CVE-2021-26321

Insufficient ID command validation in the SEV Firmware may allow a local authenticated attacker to perform a denial of s

Insufficient ID command validation in the SEV Firmware may allow a local authenticated attacker to perform a denial of service of the PSP.

MEDIUM · CVSS 5.5 EPSS 0.00117
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
▤

Affected Products & Versions

57
amd epyc 7601 firmware< naplespi-sp3_1.0.0.g
amd epyc 7551p firmware< naplespi-sp3_1.0.0.g
amd epyc 7551 firmware< naplespi-sp3_1.0.0.g
amd epyc 7501 firmware< naplespi-sp3_1.0.0.g
amd epyc 7451 firmware< naplespi-sp3_1.0.0.g
amd epyc 7401 firmware< naplespi-sp3_1.0.0.g
amd epyc 7371 firmware< naplespi-sp3_1.0.0.g
amd epyc 7351p firmware< naplespi-sp3_1.0.0.g
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · psirt@amd.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Nov 2021 · 07:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021Vendor Advisory
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