High severity · published Jun 26, 2026
CVE-2026-21734
GPU DDK - libusc OOB write at TreeRemove during WebGPU shader compilation
7.7
CVSS
0.2%
EPSS
No
On KEV
Description
A web page that contains unusual GPU shader code is loaded into the GPU compiler process and can trigger a write out-of-bounds write crash in the GPU shader compiler library. On certain platforms, when the compiler process has system privileges this could enable further exploits on the device. An edge case using a very small value in GPU shader code can cause a segmentation fault in the GPU shader compiler due to am out-of-bounds write.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GD
Graphics DDK · Imagination Technologies
1.18 RTM; 23.2 RTM; 24.1 RTM through 24.2 RTM; 25.1 RTM through 25.3 RTM · source: vendor
DD
Ddk · Imaginationtech
through 25.2; 25.3 · source: NVD
Affected product
GD
Graphics DDK
Imagination Technologies
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