What is CVE-2026-20440?

CVE-2026-20440 is a medium-severity vulnerability in Google Android, classified under CWE-1285. CVSS score: 6.7/10. Published 2026-03-02.

How severe is CVE-2026-20440?

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

Buffer overflow in Google Android

CVE-2026-20440

In MAE, there is a possible out of bounds write 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 exploitation…

EPSS: 0.001 (0.1th 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 15.0
Mediatek Mt2718
Mediatek Mt6899
Mediatek Mt6991
Mediatek Mt8678
Mediatek Mt8793
Mediatek, Inc. Mediatek Chipset — versions MT2718, MT6899, MT6991

Weakness classification (CWE)

References

security@mediatek.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-20440?: CVE-2026-20440 is a medium-severity vulnerability in Google Android, classified under CWE-1285. CVSS score: 6.7/10. Published 2026-03-02.
How severe is CVE-2026-20440?: Medium severity. CVSS v3 base score is 6.7 out of 10.