CVE-2023-20533

What it is

Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service.

At a glance

Exploitability

Can be exploited locally on the machine with an admin-level account. High risk of service disruption.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-11-14 19:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 05:30 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.5% 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 05:30 UTC

Exploit probability

0.5% · EPSS, next 30 days

Record status

Modified

Affected

• Amd Epyc 7232p Firmware < romepi_1.0.0.d
• Amd Epyc 7252 Firmware < romepi_1.0.0.d
• Amd Epyc 7262 Firmware < romepi_1.0.0.d
• Amd Epyc 7272 Firmware < romepi_1.0.0.d
• Amd Epyc 7282 Firmware < romepi_1.0.0.d
• Amd Epyc 7302 Firmware < romepi_1.0.0.d
• Amd Epyc 7302p Firmware < romepi_1.0.0.d
• Amd Epyc 7352 Firmware < romepi_1.0.0.d

Attack profile CVSS 3.1 · 6.1

Attack vector

Local

Complexity

High

Privileges needed

High

User interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

High

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-2023-20533.md and follow it. Check whether this project is affected by CVE-2023-20533. 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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