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CVE-2026-20450: CWE-617 Reachable Assertion in MediaTek, Inc. MediaTek chipset

0
Medium
VulnerabilityCVE-2026-20450cvecve-2026-20450cwe-617
Published: Mon May 04 2026 (05/04/2026, 05:41:56 UTC)
Source: CVE Database V5
Vendor/Project: MediaTek, Inc.
Product: MediaTek chipset

Description

In Modem, there is a possible system crash due to incorrect error handling. 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: MOLY01753620; Issue ID: MSV-6100.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 05/04/2026, 06:52:14 UTC

Technical Analysis

This vulnerability involves a reachable assertion failure (CWE-617) in the modem of MediaTek chipsets, leading to a potential system crash. The issue arises from improper error handling when a UE connects to a malicious base station. The attacker can remotely trigger a denial of service without needing user interaction or elevated privileges. The vulnerability affects numerous MediaTek chipset models. Although a patch ID (MOLY01753620) and issue ID (MSV-6100) are referenced, no official patch or remediation level has been confirmed or published. The vulnerability is publicly disclosed but lacks a CVSS score and known active exploitation.

Potential Impact

Successful exploitation results in a remote denial of service condition causing the affected device to crash. This disrupts normal operation of the modem component in the affected MediaTek chipsets. No further execution privileges or user interaction are required, increasing the risk of automated or stealthy attacks. There is no evidence of code execution or data compromise from the provided information.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users and administrators should monitor MediaTek communications for updates. No specific mitigations or workarounds are provided in the available data.

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Technical Details

Data Version
5.2
Assigner Short Name
MediaTek
Date Reserved
2025-11-03T01:30:59.013Z
Cvss Version
null
State
PUBLISHED
Remediation Level
null

Threat ID: 69f83e68cbff5d8610c9d59c

Added to database: 5/4/2026, 6:36:24 AM

Last enriched: 5/4/2026, 6:52:14 AM

Last updated: 5/5/2026, 5:54:09 AM

Views: 8

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