CVE-2026-20418

CVSS 9.8 CRITICALEPSS 0.3%CWE-787

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.8EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

02 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

MediaTek, Inc. · MediaTek chipset

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References

https://corp.mediatek.com/product-security-bulletin/February-2026