Is CVE-2026-0004 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-0004 being exploited in the wild.

How severe is CVE-2026-0004?

Informational severity, published 12 November 2026.

Which products and versions are affected?

Amd Processors some processors.

Is there a fix for CVE-2026-0004?

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-2026-0004 attacked?

It is attacked with local access, in device firmware.

Am I affected by CVE-2026-0004?

Check whether you run Amd Processors at an affected version. 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-2026-0004: AMD processors transient execution L1D cache inference

CVE-2026-0004 · Severity: info · Published 2026-11-12

A vulnerability in certain AMD processors allows an attacker who can run code on a system to read data from the processor's L1 cache memory, potentially exposing sensitive information that should be isolated between different privilege levels. This could lead to information disclosure affecting confidential data processing on affected systems.

Technologies: Amd Processors. Vendors: Amd.

Quick answers

Is CVE-2026-0004 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-0004 being exploited in the wild.
How severe is CVE-2026-0004?: Informational severity, published 12 November 2026.
Which products and versions are affected?: Amd Processors some processors.
Is there a fix for CVE-2026-0004?: 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-2026-0004 attacked?: It is attacked with local access, in device firmware.
Am I affected by CVE-2026-0004?: Check whether you run Amd Processors at an affected version. 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 is a transient execution vulnerability affecting AMD processors' L1D cache, where an attacker with local code execution capability can infer cached data through side-channel analysis. The vulnerability allows data leakage across privilege boundaries, compromising isolation mechanisms between kernel and user-space or between different security domains. A microcode or firmware fix is required from AMD.

Affected products

AMD Processors some processors

Timeline

2026-11-12: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.