CVE record · CVE-2026-20461

Out-of-bounds write in MediaTek, Inc. MediaTek chipset

CVSS 5.3 MediumEPSS 0.0028 · 20th percentile

Published by the CVE Program (CNA: MediaTek) at 1 Jul 2026, 03:14 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
MediaTek, Inc.	MediaTek chipset	affected MT2737 affected MT6813 affected MT6835 affected MT6858 affected MT6878 affected MT6879 affected MT6886 affected MT6895 affected MT6896 affected MT6897 affected MT6899 affected MT6980 and 21 more Other versions: unaffected

Identifiers: CVE-2026-20461
CNA: MediaTek
Weakness (CWE): CWE-787
Tags: MediaTek, Inc. MediaTek chipset
Memory corruption
Published: 1 Jul 2026
Updated: 1 Jul 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.3	Medium	3.1	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	ADP (CISA-ADP)

CISA KEV Not listed.
EPSS 0.0028, the 20th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 1 Jul 2026. New records show when each source confirmed them.

Sources

References from the CNA

corp.mediatek.com/product-security-bulletin/July-2026

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.