Vulnerability in Mediatek Mt6739
CVE-2026-20454
In geniezone, there is a possible out of bounds write due to a race condition. 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…
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.000 (1.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- security@mediatek.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-20454?
- CVE-2026-20454 is a medium-severity vulnerability in Mediatek Mt6739, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.4/10. Published 2026-06-01.
- How severe is CVE-2026-20454?
- Medium severity. CVSS v3 base score is 6.4 out of 10.