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CVE-2021-46792

UNKNOWN
Published 2023-05-09T19:01:38.204Z
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Expert Analysis

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CVSS Score

V3.1
5.9
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.323
Higher than 32.3% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

AMD

Ryzen™ 2000 series Desktop Processors “Raven Ridge” AM4

Affected Versions:

various
AMD

Ryzen™ 5000 Series Desktop processor with Radeon™ Graphics “Cezanne” AM4

Affected Versions:

Various
AMD

Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” ULP

Affected Versions:

various
AMD

Ryzen™ 2000 Series Mobile Processors “Raven Ridge” FP5

Affected Versions:

various
AMD

Ryzen™ 3000 Series Mobile processor, 2nd Gen AMD Ryzen™ Mobile Processors with Radeon™ Graphics “Picasso”

Affected Versions:

various
AMD

Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics “Renoir”

Affected Versions:

various
AMD

Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics “Lucienne”

Affected Versions:

various
AMD

Ryzen™ 5000 Series Mobile processors with Radeon™ Graphics “Cezanne”

Affected Versions:

various

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-38q7-2qqc-fvvr

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-46792
WEB https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001

Advisory provided by GitHub Security Advisory Database. Published: May 9, 2023, Modified: April 4, 2024

References

https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001
Published: 2023-05-09T19:01:38.204Z
Last Modified: 2025-01-28T15:33:26.980Z
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