CVE-2026-20493: MediaTek MT6890 Firmware

Medium severity, CVSS 4.4. EPSS: 0.1% chance of exploitation in the next 30 days.

In wifi, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: BORA00154903; Issue ID: MSV-7575.

Affected products

• MediaTek MT6890 Firmware: affected versions not specified
• MediaTek MT6988 Firmware: affected versions not specified
• MediaTek MT6990 Firmware: affected versions not specified

Published 2026-08-03. Last modified 2026-08-19.