CVE-2026-21734 Imaginationtech CVE debrief

Who should care

Organizations using Imaginationtech Ddk should prioritize patching this vulnerability to prevent potential exploits. The vulnerability can be triggered by loading a web page with unusual GPU shader code, which can lead to a write out-of-bounds write crash in the GPU shader compiler library. If the compiler process has system privileges, this could enable further exploits on the device.

Technical summary

The vulnerability is caused by a write out-of-bounds write crash in the GPU shader compiler library when loading a web page with unusual GPU shader code. An edge case using a very small value in GPU shader code can cause a segmentation fault in the GPU shader compiler due to an out-of-bounds write. The vulnerability has a CVSS vector of CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H. The CWE associated with this vulnerability is CWE-823.

Defensive priority

High priority should be given to patching this vulnerability, especially on systems with elevated privileges. Organizations should review their inventory of Imaginationtech Ddk and apply patches as soon as possible.

Recommended defensive actions

• Review and apply patches from Imaginationtech for Ddk
• Inventory Imaginationtech Ddk installations and prioritize patching
• Monitor for unusual GPU shader code activity
• Implement compensating controls to limit exploitation
• Track exception and monitor system privileges

Evidence notes

The CVE record and NVD detail provide information on the vulnerability, including its CVSS score and vector. The vendor advisory provides mitigation information. The vulnerability is considered HIGH severity and has a CVSS score of 7.7.

Official resources