What is CVE-2026-20495?

CVE-2026-20495 is a high-severity vulnerability in Mediatek Mt7902 Firmware, classified under Missing Authorization. CVSS score: 7.8/10. Published 2026-08-03.

How severe is CVE-2026-20495?

High severity. CVSS v3 base score is 7.8 out of 10.

Auth bypass in Mediatek Mt7902 Firmware

CVE-2026-20495

In Bluetooth driver, there is a possible permission bypass due to a missing permission check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00488300; Issue ID: MSV-7296.

Vulnerability class: Broken Access Control

EPSS: 0.001 (1.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mediatek Mt7902_firmware
Mediatek Mt7920_firmware
Mediatek Mt7921_firmware
Mediatek Mt7922_firmware
Mediatek Mt7925_firmware
Mediatek Mt7927_firmware
Mediatek, Inc. Mediatek Chipset — versions MT7902, MT7920, MT7921

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security@mediatek.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-20495?: CVE-2026-20495 is a high-severity vulnerability in Mediatek Mt7902 Firmware, classified under Missing Authorization. CVSS score: 7.8/10. Published 2026-08-03.
How severe is CVE-2026-20495?: High severity. CVSS v3 base score is 7.8 out of 10.