CVE-2021-26338 json
Improper access controls in System Management Unit (SMU) may allow for an attacker to override performance control tables located in DRAM r…
published 2021-11-16 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13144
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
Improper access controls in System Management Unit (SMU) may allow for an attacker to override performance control tables located in DRAM resulting in a potential lack of system resources.
Patch / fix
- AMD 2nd Gen AMD EPYC™ RomePI-SP3_1.0.0.C
- AMD 3rd Gen AMD EPYC™ MilanPI-SP3_1.0.0.4
Exploit prediction
0.93% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Affected products
- AMD 2nd Gen AMD EPYC™
- AMD 3rd Gen AMD EPYC™
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
amd.com
/en/corporate/product-security/bulletin/amd-sb-1021
vendor-advisory
Sources
- CVE List CVE-2021-26338
- NVD CVE-2021-26338
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