CVE-2026-20500: CWE-295 Improper Certificate Validation in MediaTek, Inc. MediaTek chipset
Description
In Modem, there is a possible system crash due to improper input validation. This could lead to local denial of service with User execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01810811; Issue ID: MSV-9232.
CVSS v3.1
Score 5.5medium
Affected software
MediaTek, Inc.
MediaTek chipset
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper certificate validation (CWE-295) in the modem of MediaTek chipsets, which may cause a system crash and local denial of service. Exploitation requires local user privileges and user interaction. The affected chipsets include a range of MediaTek models such as MT2716, MT6835, MT6858, MT6878, and others. No vendor advisory or patch details have been provided, and no known exploits are reported in the wild.
Potential Impact
The impact is a local denial of service due to a system crash in the modem component. Exploitation requires user execution privileges and user interaction, limiting the attack vector to local users who can interact with the device. There is no indication of remote exploitation or privilege escalation beyond the local user level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official remediation or patch information is provided, users should monitor MediaTek advisories for updates. Until a fix is available, limiting local user access and avoiding untrusted user interactions may reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.027Z
- State
- PUBLISHED
Threat ID: 6a9e1c72acd9273b49c51d65
Added to database: 09/07/2026, 02:07:46 UTC
Last enriched: 09/07/2026, 08:55:14 UTC
Last updated: 10/21/2026, 13:20:20 UTC
Views: 74
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