CVE-2026-20520

HIGHCVSS 7.5

Description

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 privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01778988; Issue ID: MSV-8897.

Timeline

Published:October 5th, 2026 2:16 AM

Last modified:October 6th, 2026 4:18 AM

CVSS Scoring

CVSS v3: 7.5 (HIGH)

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-787

References & Reports

Advisories, patches, and third-party reports

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

Source: NIST NVD · Data may lag official sources by up to one minute