CVE-2021-26393

Insufficient memory cleanup in the AMD Secure Processor (ASP) Trusted Execution Environment (TEE)...

5.5 Medium

Insufficient memory cleanup in the AMD Secure Processor (ASP) Trusted Execution Environment (TEE) may allow an authenticated attacker with privileges to generate a valid signed TA and potentially poison the contents of the process memory with attacker controlled data resulting in a loss of confidentiality.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.28%Down 2.3 points since Nov 10, 2022

What each source reports

NVD Score used 5.5

Record: CVE-2021-26393
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-401
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-26393
Updated: 2026-11-02

EUVDEUVD-2021-13199 No score

Record: EUVD-2021-13199
Updated: 2026-11-03

GitHub AdvisoriesGHSA-p326-98p9-wprv 5.5

Insufficient memory cleanup in the AMD Secure Processor (ASP) Trusted Execution Environment (TEE)...

Record: GHSA-p326-98p9-wprv
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-401
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-26393 is a medium vulnerability (CVSS 5.5) in Amd Radeon Rx 5000 Series & Pro W5000 Series, published November 9, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. No source names a fixed version.