CVE-2021-26333: amd chipset_driver
CVSS: 5.5v3.1MediumModified
Published 21-09-2021Last modified 28-05-2026
Vulnerability summary
CVE-2021-26333 is a medium (CVSS 5.5) vulnerability in amd chipset_driver. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 42.8% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.52%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 21-09-2021PublishedVulnerability first disclosed.
- 28-05-2026Last modifiedVulnerability information updated.
Description
An information disclosure vulnerability exists in AMD Platform Security Processor (PSP) chipset driver. The discretionary access control list (DACL) may allow low privileged users to open a handle and send requests to the driver resulting in a potential data leak from uninitialized physical pages.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NSourcesSingle source
Medium 4.9Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:C/I:N/A:NSourcesSingle source
EPSS trend
Probability
0.52%
Chance of exploitation in the next 30 days
Percentile
43%
Versus all other CVEs
30-day change
0.00 pp
From 0.52% on 20-09-2026
20-09-202620-10-2026
EPSS score0.52%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Amd2 products
- chipset_driver< 3.08.17.735
- psp_driver≥ PSP Driver, < 5.17.0.0 | < 5.17.0.0
1 vendor · 2 products
References
3 links- packetstormsecurity.com/files/164202/AMD-Chipset-Driver-Information-Disclosure-Memory-Leak.htmlX Refsource MISCThird Party AdvisoryVDB Entry