What is CVE-2026-21736?

CVE-2026-21736 is a medium-severity vulnerability in Imaginationtech Ddk, classified under Improper Handling of Insufficient Permissions or Privileges. CVSS score: 4.4/10. Published 2026-03-09.

How severe is CVE-2026-21736?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Vulnerability in Imaginationtech Ddk

CVE-2026-21736

Software installed and run as a non-privileged user may conduct improper GPU system calls to gain write permission to read-only wrapped user-mode memory. This is caused by improper handling of the memory protections for the user-mode wrapped memory resource.

Published 2026-03-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Imaginationtech Ddk — versions 25.1
Imagination Technologies Graphics Ddk — versions 1.17 RTM, 1.18 RTM, 23.2 RTM

Weakness classification (CWE)

CWE-280 — Improper Handling of Insufficient Permissions or Privileges

References

367425dc-4d06-4041-9650-c2dc6aaa27ce (Vendor Advisory)

Frequently asked questions

What is CVE-2026-21736?: CVE-2026-21736 is a medium-severity vulnerability in Imaginationtech Ddk, classified under Improper Handling of Insufficient Permissions or Privileges. CVSS score: 4.4/10. Published 2026-03-09.
How severe is CVE-2026-21736?: Medium severity. CVSS v3 base score is 4.4 out of 10.