Is CVE-2021-26333 in the CISA KEV catalog?

No. CVE-2021-26333 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-26333?

CVE-2021-26333 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-26333?

CVE-2021-26333 has an EPSS score of 0.50% (39th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-26333?

Upgrade chipset driver to 3.08.17.735 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-26333

MEDIUM

5.5

CVSS v3

NVD

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.

CWE-200Information Exposure CWE-909

How to fix

Remediation Available

chipset driverNVD

Affected:< 3.08.17.735Fixed in:3.08.17.735CVE-2021-26333derived from NVD

psp driverNVD

Affected:< 5.17.0.0Fixed in:5.17.0.0CVE-2021-26333derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.50%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

Vendor Advisory1

amd.com

Third-Party Advisory2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.