# Buffer overflow in 3rd Gen AMD EPYC™ Processors and others

CVE record · `CVE-2023-31355`

- **Identifiers:** `CVE-2023-31355`
- **State:** Confirmed
- **Severity:** CVSS 6.0 Medium
- **Critical:** No
- **CNA:** AMD
- **Weakness (CWE):** [CWE-119](https://cwe.mitre.org/data/definitions/119.html)
- **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md)
- **Technologies:** [3rd Gen AMD EPYC™ Processors](https://agentprime.io/advisories/technology/3rd-gen-amd-epyctm-processors.md) · [4th Gen AMD EPYC™ Processors](https://agentprime.io/advisories/technology/4th-gen-amd-epyctm-processors.md) · [AMD EPYC™ Embedded 7003](https://agentprime.io/advisories/technology/amd-epyctm-embedded-7003.md) · [AMD EPYC™ Embedded 9003](https://agentprime.io/advisories/technology/amd-epyctm-embedded-9003.md)
- **Published:** 5 Aug 2024
- **Updated:** 6 Aug 2024
- **Reviewed by a person:** No

Published by the CVE Program (CNA: AMD) at 5 Aug 2024, 16:04 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: AMD. Product: 3rd Gen AMD EPYC™ Processors.
  - affected: `various to before MilanPI 1.0.0.D` (Platform Initialization)
  - Other versions: affected
- Vendor: AMD. Product: 4th Gen AMD EPYC™ Processors.
  - affected: `various to before GenoaPI 1.0.0.C` (Platform Initialization)
  - Other versions: affected
- Vendor: AMD. Product: AMD EPYC™ Embedded 7003.
  - affected: `various to before EmbMilanPI-SP3 1.0.0.9` (Platform Initialization)
  - Other versions: affected
- Vendor: AMD. Product: AMD EPYC™ Embedded 9003.
  - affected: `various to before EmbGenoaPI-SP5 1.0.0.7` (Platform Initialization)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 6.0 Medium, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N`, from CNA (AMD)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0044, the 38th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 5 Aug 2024. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2023-31355](https://www.cve.org/CVERecord?id=CVE-2023-31355)
- [NVD: CVE-2023-31355](https://nvd.nist.gov/vuln/detail/CVE-2023-31355)

### References from the CNA

- <https://https//www.amd.com/en/resources/product-security/bulletin/amd-sb-3011.html> (vendor-advisory)

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2023-31355>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2023-31355/>. Everything for agents: <https://agentprime.io/llms.txt>.