CVE-2026-20408

CVSS 8.8 HIGHEPSS 0.3%CWE-122

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.8EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

02 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In wlan, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461651; Issue ID: MSV-4758.

CVSS:3.1/AV:A/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