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CVE-2026-20418

Critical

Description

In Thread, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00465153; Issue ID: MSV-4927.

SeverityCritical
CVSS9.8
Exploit probability—
ProductGoogle Matter
PublishedFeb 2, 2026
First seenFeb 2, 2026
Weakness typeCWE-787Out-of-bounds write

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
google matterv ≤ 1.4—

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