What is CVE-2026-21733?

CVE-2026-21733 is a high-severity vulnerability in Google Android, classified under Improper Handling of Insufficient Permissions or Privileges. CVSS score: 7.3/10. Published 2026-04-17.

How severe is CVE-2026-21733?

High severity. CVSS v3 base score is 7.3 out of 10.

Improper input validation in Google Android

CVE-2026-21733

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 and files. This is caused by improper handling of GPU memory reservation protections.

Published 2026-04-17 · last modified 2026-08-12.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.001 (0.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 0.7% 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

Google Android
Imaginationtech Ddk — versions 25.3
Imagination Technologies Graphics Ddk — versions 24.1 RTM, 1.18 RTM, 25.1 RTM
Linux Kernel

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2026-21733?: CVE-2026-21733 is a high-severity vulnerability in Google Android, classified under Improper Handling of Insufficient Permissions or Privileges. CVSS score: 7.3/10. Published 2026-04-17.
How severe is CVE-2026-21733?: High severity. CVSS v3 base score is 7.3 out of 10.