Is CVE-2024-36343 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2024-36343 being exploited in the wild.

How severe is CVE-2024-36343?

Informational severity, with a CVSS score of 6.7, published 19 May 2026.

Is there a fix for CVE-2024-36343?

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-2024-36343 attacked?

It is attacked with local access, in device firmware.

Am I affected by CVE-2024-36343?

Check whether you run Amd Processors. 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.

CVE-2024-36343: AMD Processor out of bounds read/write in SMM communications buffer

CVE-2024-36343 · Severity: info · CVSS 6.7 · Published 2026-05-19

A security vulnerability exists in the firmware of certain AMD processors that manage high-privilege system operations. A highly privileged attacker, such as one with administrative access to the operating system, could exploit this flaw to read or write to protected areas of system memory. This could lead to a compromise of sensitive data or the integrity of the system's core security functions.

Technologies: Amd Processors. Vendors: Amd.

Quick answers

Is CVE-2024-36343 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2024-36343 being exploited in the wild.
How severe is CVE-2024-36343?: Informational severity, with a CVSS score of 6.7, published 19 May 2026.
Which products and versions are affected?: AMD Processors.
Is there a fix for CVE-2024-36343?: 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-2024-36343 attacked?: It is attacked with local access, in device firmware.
Am I affected by CVE-2024-36343?: Check whether you run Amd Processors. 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

This vulnerability is characterized as an improper input validation flaw within the System Management Mode (SMM) communications buffer of AMD processors. A local attacker with high privileges (such as Ring 0/Kernel access) can provide crafted input to the SMM handler, leading to an out-of-bounds (OOB) read or write within the Top of Memory Segment (TSEG). This memory region is typically reserved for SMM to protect sensitive firmware data from the operating system. Successful exploitation could allow the attacker to bypass hardware-level memory protections, potentially leading to arbitrary code execution within SMM or the theft of secrets stored in protected memory. Users should apply firmware/BIOS updates provided by their original equipment manufacturers (OEMs).

Affected products

AMD Processors

Timeline

2026-05-19: disclosed

References

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