Home/CVE/AMD System Management Unit (SMU) may experience a heap-based overflow which may result in a loss of resources.
CVE

CVE-2021-26330

AMD System Management Unit (SMU) may experience a heap-based overflow which may result in a loss of resources.

AMD System Management Unit (SMU) may experience a heap-based overflow which may result in a loss of resources.

MEDIUM · CVSS 5.5 EPSS 0.00122
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-122Heap-based Buffer Overflow
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

58
amd epyc 7003 firmware< milanpi-sp3_1.0.0.4
amd epyc 7002 firmware< romepi-sp3_1.0.0.c
amd epyc 7001 firmware< naplespi-sp3_1.0.0.g
amd epyc 72f3 firmware< milanpi-sp3_1.0.0.4
amd epyc 7313 firmware< milanpi-sp3_1.0.0.4
amd epyc 7313p firmware< milanpi-sp3_1.0.0.4
amd epyc 7343 firmware< milanpi-sp3_1.0.0.4
amd epyc 73f3 firmware< milanpi-sp3_1.0.0.4
▣

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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