CVE-2026-20498: MediaTek MT6991 Firmware

Medium severity, CVSS 6.0. EPSS: 0.2% chance of exploitation in the next 30 days.

In geniezone, there is a possible escalation of privilege due to a missing permission check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10900493; Issue ID: MSV-6765.

Affected products

• MediaTek MT6991 Firmware: affected versions not specified
• MediaTek MT8768 Firmware: affected versions not specified
• MediaTek MT8791T Firmware: affected versions not specified
• MediaTek MT8792 Firmware: affected versions not specified
• MediaTek MT8796 Firmware: affected versions not specified
• MediaTek MT8799 Firmware: affected versions not specified
• MediaTek MT8873 Firmware: affected versions not specified
• MediaTek MT8883 Firmware: affected versions not specified
• MediaTek MT8893 Firmware: affected versions not specified
• MediaTek MT8910 Firmware: affected versions not specified

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