Is CVE-2026-21733 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-21733 being exploited in the wild.

How severe is CVE-2026-21733?

High severity, with a CVSS score of 7.3, published 17 April 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, Linux and Android versions prior to April 2026 updates.

Is there a fix for CVE-2026-21733?

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-2026-21733 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-21733?

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-2026-21733: Imagination Technologies Graphics DDK improper GPU memory reservation protection

CVE-2026-21733 · Severity: high · CVSS 7.3 · Published 2026-04-17

A vulnerability in Imagination Technologies graphics drivers could allow a standard user to gain unauthorized write access to protected system memory and files. This component is responsible for managing how applications interact with the device's graphics hardware on Linux and Android systems. An attacker could exploit this to modify sensitive data or bypass security restrictions on the device.

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

Quick answers

Is CVE-2026-21733 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-21733 being exploited in the wild.
How severe is CVE-2026-21733?: High severity, with a CVSS score of 7.3, published 17 April 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, Linux and Android versions prior to April 2026 updates.
Is there a fix for CVE-2026-21733?: 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-2026-21733 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-21733?: 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

A vulnerability exists in the Imagination Technologies Graphics DDK (Driver Development Kit) for Linux and Android due to improper handling of GPU memory reservation protections (CWE-280/CWE-20). A local, non-privileged attacker can execute specific GPU system calls to bypass memory protections, gaining write permissions to user-mode memory and files that are intended to be read-only. This flaw allows for unauthorized data modification and potential privilege escalation. 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

2026-04-17: disclosed
2026-04-17: advisory

References

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

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