Is CVE-2026-21734 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-21734 being exploited in the wild.

How severe is CVE-2026-21734?

Informational severity, published 26 June 2026.

Which products and versions are affected?

Imagination Technologies Graphics DDK 1.18 RTM, 23.2 RTM, 24.1 RTM to 24.2 RTM, 25.1 RTM to 25.3 RTM.

Is there a fix for CVE-2026-21734?

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-2026-21734 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-21734?

Check whether you run Imagination Technologies Graphics DDK 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-2026-21734: Imagination Technologies Graphics DDK out-of-bounds write in GPU shader compiler

CVE-2026-21734 · Severity: info · Published 2026-06-26

A vulnerability in the Imagination Technologies Graphics DDK (Driver Development Kit) allows a malicious web page to crash the GPU shader compiler. By including specifically crafted, unusual shader code on a website, an attacker can trigger an out-of-bounds write. In certain configurations where the compiler runs with high system privileges, this could lead to further device exploitation or unauthorized access.

Technologies: Imagination Technologies Graphics DDK. Vendors: Imagination Technologies.

Quick answers

Is CVE-2026-21734 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-21734 being exploited in the wild.
How severe is CVE-2026-21734?: Informational severity, published 26 June 2026.
Which products and versions are affected?: Imagination Technologies Graphics DDK 1.18 RTM, 23.2 RTM, 24.1 RTM to 24.2 RTM, 25.1 RTM to 25.3 RTM.
Is there a fix for CVE-2026-21734?: 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-2026-21734 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-21734?: Check whether you run Imagination Technologies Graphics DDK 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

An out-of-bounds (OOB) write vulnerability exists in the Imagination Technologies GPU shader compiler library. The flaw is triggered when the compiler processes "unusual" GPU shader code containing specific edge-case values (very small values). This results in a segmentation fault or memory corruption. The attack vector is via a web page (e.g., WebGPU/WebGL), and if the compiler process is running with elevated system privileges, this memory corruption could potentially be leveraged for privilege escalation or arbitrary code execution. The issue is addressed in DDK release 26.1 RTM.

Affected products

Imagination Technologies Graphics DDK 1.18 RTM, 23.2 RTM, 24.1 RTM to 24.2 RTM, 25.1 RTM to 25.3 RTM

Timeline

2026-06-26: disclosed
2026-06-26: advisory

References

https://www.imaginationtech.com/gpu-driver-vulnerabilities/

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