CVE-2021-46758

6.1 MEDIUM 0.3% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited with physical access without logging in. High risk of data tampering, service disruption.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2023-11-14 19:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 04:15 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.3% in the next 30 days (EPSS).
Severity: 6.1 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2023-11-14 19:15 UTC
Last modified: 2026-06-17 04:15 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Record status: Modified

Affected

Amd Ryzen 7 5700g Firmware < comboam4v2_pi_1.2.0.8
Amd Ryzen 7 5700ge Firmware < comboam4v2_pi_1.2.0.8
Amd Ryzen 5 5600g Firmware < comboam4v2_pi_1.2.0.8
Amd Ryzen 5 5600ge Firmware < comboam4v2_pi_1.2.0.8
Amd Ryzen 3 5300g Firmware < comboam4v2_pi_1.2.0.8
Amd Ryzen 3 5300ge Firmware < comboam4v2_pi_1.2.0.8
Amd Ryzen 9 7950x3d Firmware < comboam5_1.0.0.1
Amd Ryzen 9 7900x3d Firmware < comboam5_1.0.0.1

Attack profile CVSS 3.1 · 6.1

Attack vector: Physical
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: High

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-46758.md and follow it. Check whether this project is affected by CVE-2021-46758. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record