What is CVE-2026-20498?

CVE-2026-20498 is a medium-severity vulnerability in Mediatek Mt6991 Firmware, classified under CWE-1287. CVSS score: 6.0/10. Published 2026-08-03.

How severe is CVE-2026-20498?

Medium severity. CVSS v3 base score is 6.0 out of 10.

Vulnerability in Mediatek Mt6991 Firmware

CVE-2026-20498

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.

EPSS: 0.001 (1.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.

Affected products

Mediatek Mt6991_firmware
Mediatek Mt8768_firmware
Mediatek Mt8791t_firmware
Mediatek Mt8792_firmware
Mediatek Mt8796_firmware
Mediatek Mt8799_firmware
Mediatek Mt8873_firmware
Mediatek Mt8883_firmware
Mediatek Mt8893_firmware
Mediatek Mt8910_firmware

Weakness classification (CWE)

CWE-1287

References

security@mediatek.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-20498?: CVE-2026-20498 is a medium-severity vulnerability in Mediatek Mt6991 Firmware, classified under CWE-1287. CVSS score: 6.0/10. Published 2026-08-03.
How severe is CVE-2026-20498?: Medium severity. CVSS v3 base score is 6.0 out of 10.