CVE-2021-46792

Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious...

5.9 Medium

Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious BIOS to create a race condition causing the ASP bootloader to perform out-of-bounds SRAM reads upon an S3 resume event potentially leading to a denial of service.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.40%Up 0.4 points since May 10, 2023

What each source reports

NVD Score used 5.9

Record: CVE-2021-46792
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-367
Updated: 2026-11-02

CVE List 5.9

Record: CVE-2021-46792
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-367
Updated: 2026-11-02

EUVDEUVD-2021-33448 5.9

Record: EUVD-2021-33448
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-38q7-2qqc-fvvr 5.9

Time-of-check Time-of-use (TOCTOU) in the BIOS2PSP command may allow an attacker with a malicious...

Record: GHSA-38q7-2qqc-fvvr
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-367
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-2021-46792 is a medium vulnerability (CVSS 5.9) in Amd Athlon Gold 3150g Firmware, published May 9, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 33rd percentile. No source names a fixed version.