CVE-2021-26338: amd 2nd gen amd epyc™ Improper Access Control
CVSS: 7.8v2.0HighModified
Published 16-11-2021Last modified 17-09-2024
Vulnerability summary
CVE-2021-26338 is a high (CVSS 7.8) Improper Access Control vulnerability in amd 2nd gen amd epyc™. EPSS estimates a 0.93% chance of exploitation in the next 30 days, higher than 59.8% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v2.0 (NVD)EPSS score
0.93%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 16-11-2021PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
High 7.8Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
0.93%
Chance of exploitation in the next 30 days
Percentile
60%
Versus all other CVEs
30-day change
0.00 pp
From 0.93% on 19-09-2026
19-09-202619-10-2026
EPSS score0.93%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Amd46 products
- 2nd gen amd epyc™≥ unspecified, < RomePI-SP3_1.0.0.C
- 3rd gen amd epyc™≥ unspecified, < MilanPI-SP3_1.0.0.4
- epyc_7232p_firmware< romepi-sp3_1.0.0.c
- epyc_7252_firmware< romepi-sp3_1.0.0.c
- epyc_7262_firmware< romepi-sp3_1.0.0.c
1 vendor · 46 products