Vulnerability · Published Nov 2, 2026 · Assigned by MediaTek

CVE-2026-20548

High 7.5

In plain English

A high-severity out-of-bounds write in MediaTek chipset from MediaTek, Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.2%top 84.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

In Modem, there is a possible out of bounds write due to an integer overflow. 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 privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01872867 / MOLY01774038; Issue ID: MSV-9801.

Affected products (as reported)

Vendor	Product	Versions
MediaTek, Inc.	MediaTek chipset	MT2716MT2735MT2737MT6739MT6761MT6762MT6763MT6765

Weakness: CWE-787 · Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://www.mediatek.com/product-security-bulletin/November-2026