What is CVE-2026-20432?

CVE-2026-20432 is a high-severity vulnerability in Mediatek Mt2735, classified under Out-of-bounds Write. CVSS score: 8.0/10. Published 2026-04-07.

How severe is CVE-2026-20432?

High severity. CVSS v3 base score is 8.0 out of 10.

Buffer overflow in Mediatek Mt2735

CVE-2026-20432

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution priv…

Vulnerability class: Buffer Overflow

EPSS: 0.003 (21.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Mediatek Mt2735
Mediatek Mt2735_firmware
Mediatek Mt2737
Mediatek Mt2737_firmware
Mediatek Mt6779
Mediatek Mt6779_firmware
Mediatek Mt6781
Mediatek Mt6781_firmware
Mediatek Mt6783
Mediatek Mt6783_firmware

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

security@mediatek.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-20432?: CVE-2026-20432 is a high-severity vulnerability in Mediatek Mt2735, classified under Out-of-bounds Write. CVSS score: 8.0/10. Published 2026-04-07.
How severe is CVE-2026-20432?: High severity. CVSS v3 base score is 8.0 out of 10.