CVE-2026-21733 Imagination Technologies CVE debrief

Who should care

Organizations that deploy or support devices using Imagination Technologies graphics drivers or the Graphics DDK on Linux or Android should pay attention, especially endpoint and platform teams responsible for patching embedded, mobile, or graphics-heavy systems.

Technical summary

The supplied NVD metadata shows CVSS v3.1 vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L, which points to a locally reachable issue requiring low privileges and no user interaction, with significant confidentiality and integrity impact and some availability impact. NVD also associates the record with CWE-20 (Improper Input Validation). Beyond that, the public corpus does not provide a confirmed root cause, affected versions, or exploitability details, so those specifics should not be assumed.

Defensive priority

High. The severity score is 7.3 and the attack conditions suggest exposure on systems where local or low-privilege access is possible. Because the record is still Awaiting Analysis, defenders should monitor for vendor guidance and validate exposure before assuming scope.

Recommended defensive actions

• Inventory systems that use Imagination Technologies Graphics DDK or related graphics drivers on Linux and Android.
• Monitor the vendor advisory page and the NVD record for updated affected-version and remediation details.
• Apply vendor patches or mitigations promptly once released and validated.
• Review local privilege boundaries on exposed systems, since the published CVSS vector indicates a local, low-privilege attack path.
• Prioritize devices where graphics components are present on shared, multi-user, or otherwise locally reachable systems.
• Track this CVE in vulnerability management workflows until the NVD analysis and vendor guidance are complete.

Evidence notes

The public corpus only supports a limited debrief. Supported facts include: CVE publication on 2026-04-17; CVSS 7.3 High; NVD status 'Awaiting Analysis'; CVSS vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L; CWE-20; and an official vendor reference to Imagination Technologies' GPU driver vulnerabilities page. No affected version list, exploit chain, or remediation details were supplied, so none are asserted here.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.