CVE-2021-26381

HIGH EPSS 4.2%

Published Feb 10, 20264mo ago · Modified Jun 17, 20262w ago

7.1 CVSS 4.0

High

Published Feb 10, 2026 4mo ago

Last Modified Jun 17, 2026 2w ago

Description

Improper system call parameter validation in the Trusted OS may allow a malicious driver to perform mapping or unmapping operations on a large number of pages, potentially resulting in kernel memory corruption.

CVSS Details

Base Score

7.1

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Local

Attack Complexity High

Privileges Required High

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

4.2% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-770

References 2

amd.com https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4013.html
amd.com https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6024.html

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.