What is CVE-2026-20427?

CVE-2026-20427 is a medium-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 6.7/10. Published 2026-03-02.

How severe is CVE-2026-20427?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Buffer overflow in Google Android

CVE-2026-20427

In display, there is a possible escalation of privilege due to a missing bounds 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 expl…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (0.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Google Android — versions 14.0, 15.0, 16.0
Mediatek Mt6739
Mediatek Mt6761
Mediatek Mt6765
Mediatek Mt6768
Mediatek Mt6781
Mediatek Mt6789
Mediatek Mt6833
Mediatek Mt6835
Mediatek Mt6853

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security@mediatek.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-20427?: CVE-2026-20427 is a medium-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 6.7/10. Published 2026-03-02.
How severe is CVE-2026-20427?: Medium severity. CVSS v3 base score is 6.7 out of 10.