CVE-2026-20466

unknown

Published 2026-08-03 · Modified 2026-08-03

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

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Description

In sec boot, there is a possible escalation of privilege due to a heap buffer overflow. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: AUTO00845351 (Note: For MT2737) / ALPS11072643 (Note: For MT6880, MT6890, MT6990); Issue ID: MSV-6929.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

References

https://www.mediatek.com/product-security-bulletin/August-2026

CWEs

CWE-787

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.