# CVE-2023-31309: AMD Power Management Firmware improper validation in PMFW

Source: https://junglewise.ai/threats/cve-2023-31309-amd-power-management-firmware-improper-validation-in-pmfw  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-15. Updated: 2026-05-15  
License: CC BY 4.0 with a link back

CVE-2023-31309 · Severity: info · CVSS 6.8 · Published 2026-05-15

A vulnerability in AMD's Power Management Firmware could allow a high-privileged user to provide malformed data during internal system operations. This could lead to the unauthorized viewing of sensitive information or cause system instability. An attacker would already need significant administrative control over the system to exploit this flaw.

Technologies: [Amd Power Management Firmware](https://junglewise.ai/threats/technologies/power-management-firmware). Vendors: [Amd](https://junglewise.ai/threats/vendors/amd).

## Quick answers

**Is CVE-2023-31309 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-31309 being exploited in the wild.

**How severe is CVE-2023-31309?** Informational severity, with a CVSS score of 6.8, published 15 May 2026.

**Which products and versions are affected?** AMD Power Management Firmware (PMFW).

**Is there a fix for CVE-2023-31309?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2023-31309 attacked?** It is attacked with local access, in device firmware.

**Am I affected by CVE-2023-31309?** Check whether you run Amd Power Management Firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An improper validation of array index (CWE-129) exists in the AMD Power Management Firmware (PMFW). A local attacker with high privileges can pass malformed workload arguments when the system exports table data from the System Management Unit (SMU) to the DRAM. This improper validation can be leveraged to access sensitive memory or cause a denial-of-service condition. The vulnerability requires high privileges (PR:H) and local access (AV:L) to exploit.

## Affected products

- AMD Power Management Firmware (PMFW)

## Timeline

- 2026-05-15: disclosed: Initial NVD publication date

## References

- [https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6027.html](https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6027.html)

## Related threats

- [AMD Power Management Firmware input validation flaw](https://junglewise.ai/threats/cve-2026-0101-improper-validation-of-specified-quantities-in-input-within-amd)
- [AMD Power Management Firmware out-of-bounds read](https://junglewise.ai/threats/cve-2025-0044-amd-power-management-firmware-out-of-bounds-read)