Vulnerability · Published Oct 30, 2026 · Assigned by imaginationtech

CVE-2026-65587GPU DDK - OOB write in CalculateNPOTTwiddleSparsePageMap via TEXTURE_BASE_LEVEL change

Medium 5.5

In plain English

A medium-severity out-of-bounds write in Graphics DDK from Imagination Technologies. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)<0.1%top 99.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A web page that contains unusual WebGPU content loaded into the GPU GLES render process can trigger an OOB write in the GPU user-space driver, leading to memory corruption and possible browser/GPU process crash. The software writes data past the end of an intended memory offset. Writing outside the bounds of allocated memory can corrupt adjacent memory, crash the process, or cause undefined behaviour.

Affected products (as reported)

Vendor	Product	Versions
Imagination Technologies	Graphics DDK	1.18 RTM223.2 RTM224.2 RTM225.1 RTM2 – through 25.3 RTM26.1 RTM1

Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

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