CVE-2021-26383

HIGH EPSS 5.0%
Published Sep 6, 20259mo ago · Modified Jun 17, 20261w ago
7.9 CVSS 3.1
High
Find Similar
Published Sep 6, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

Insufficient bounds checking in AMD TEE (Trusted Execution Environment) could allow an attacker with a compromised userspace to invoke a command with malformed arguments leading to out of bounds memory access, potentially resulting in loss of integrity or availability.

CVSS Details

Base Score
7.9
Exploitability
1.5
Impact
5.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Changed
Confidentiality None
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
5.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

References 3

  • amd.com https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4012.html
  • amd.com https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-5007.html
  • amd.com https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6018.html

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.