What is CVE-2026-20465?

CVE-2026-20465 is a high-severity vulnerability in Mediatek, Inc. Mediatek Chipset, classified under Heap-based Buffer Overflow. CVSS score: 8.1/10. Published 2026-08-03.

How severe is CVE-2026-20465?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in Mediatek, Inc. Mediatek Chipset

CVE-2026-20465

In wlan AP driver, there is a possible out of bounds write due to a missing bounds check. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Mediatek, Inc. Mediatek Chipset — versions MT6890, MT7915, MT7916

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

security@mediatek.com

Frequently asked questions

What is CVE-2026-20465?: CVE-2026-20465 is a high-severity vulnerability in Mediatek, Inc. Mediatek Chipset, classified under Heap-based Buffer Overflow. CVSS score: 8.1/10. Published 2026-08-03.
How severe is CVE-2026-20465?: High severity. CVSS v3 base score is 8.1 out of 10.