CVE-2026-21732 json
GPU DDK - libusc OOB write at ConvertSwitchToArrayLookupBP during WebGPU shader compilation
published 2026-03-20 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-13834
- cvss
- 9.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
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 large value in switch statements in GPU shader code can cause a segmentation fault in the GPU shader compiler due to an out-of-bounds write access.
Patch / fix
- Imagination Technologies Graphics DDK 1.17 RTM, 1.18 RTM, 25.2 RTM
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| CNA | 3.1 | 9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
Affected products
- Imagination Technologies Graphics DDK
Classification
References
-
imaginationtech.com
/gpu-driver-vulnerabilities/
vendor-advisory
Sources
- CVE List CVE-2026-21732
- NVD CVE-2026-21732
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