01 Record
CVE-2021-26338
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.
UnratedPUBLISHEDCNA: AMD
CNA base scoreUnratedNo CNA CVSS vector
02 Description
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.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.92% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 60.1% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-11-16 17:53Z4 YR AGO
- Last updated
- 2024-09-17 01:56Z2 YR AGO
- Reserved
- 2021-01-29
- Assigning CNA
- AMD
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-284Improper Access ControlPillar
- Data version
- 5.1
- Document digest
- d23f49b345f0fa7c94a5b8e5eeb5f650a19e3a31d15344c6937a7b5879e127d8
05 Affected products
VendorProductVersionsPlatforms