CVE-2021-46758

Insufficient validation of SPI flash addresses in the ASP (AMD Secure Processor) bootloader may...

6.1 Medium

Insufficient validation of SPI flash addresses in the ASP (AMD Secure Processor) bootloader may allow an attacker to read data in memory mapped beyond SPI flash resulting in a potential loss of availability and integrity.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: High

Exploit likelihood

0.33%Up 0.3 points since Nov 15, 2023

What each source reports

NVD Score used 6.1

Record: CVE-2021-46758
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Updated: 2026-11-02

CVE List No score

Record: CVE-2021-46758
Updated: 2026-11-02

EUVDEUVD-2021-33414 No score

Record: EUVD-2021-33414
Updated: 2026-11-03

GitHub AdvisoriesGHSA-qvg6-x224-c55m 6.1

Insufficient validation of SPI flash addresses in the ASP (AMD Secure Processor) bootloader may...

Record: GHSA-qvg6-x224-c55m
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
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-2021-46758 is a medium vulnerability (CVSS 6.1) in Amd Ryzen™ 5000 Series Processors With Radeon™ Graphics “barcelo”, published November 14, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.33%, the 25th percentile. No source names a fixed version.