CVE-2026-20403

MEDIUM

Modem - DoS

Title source: llm

Description

In Modem, there is a possible system crash due to a missing bounds check. This could lead to remote denial of service, 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: MOLY01689254 (Note: For N15 and NR16) / MOLY01689259 (Note: For NR17 and NR17R); Issue ID: MSV-4843.

References (1)

[Vendor Advisory] https://corp.mediatek.com/product-security-bulletin/February-2026

Scores

CVSS v3 6.5

EPSS 0.0008

EPSS Percentile 23.0%

Attack Vector ADJACENT_NETWORK

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

Classification

CWE

CWE-787

Status published

Affected Products (4)

mediatek/nr15

mediatek/nr16

mediatek/nr17

mediatek/nr17r

Timeline

Published Feb 02, 2026

Tracked Since Feb 18, 2026