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Fencer Vulns
critical 9.8

CVE-2025-13952 json

GPU DDK - libusc UAF via WebGPU shaders at MergeConsecutiveBarriersBP

published 2026-01-24 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-4593

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

A web page that contains unusual GPU shader code is loaded from the Internet into the GPU compiler process triggers a write use-after-free 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.

The shader code contained in the web page executes a path in the compiler that held onto an out of date pointer, pointing to a freed memory object.

Patch / fix

  • Imagination Technologies Graphics DDK 1.17 RTM, 1.18 RTM, 23.2 RTM, 24.1 RTM, 25.3 RTM

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
9 mo ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Imagination Technologies Graphics DDK

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.