CVE-2026-20469: CWE-123 Write-what-where Condition in MediaTek, Inc. MediaTek chipset
CVE-2026-20469 is a write-what-where condition vulnerability in MediaTek chipsets related to improper input validation in the trusted_mem component. This flaw could allow a local attacker, who already has System privileges, to escalate their privileges further. Exploitation requires user interaction. Multiple MediaTek chipset models are affected. No CVSS score or official patch information is currently available.
AI Analysis
Technical Summary
This vulnerability involves a write-what-where condition (CWE-123) in the trusted_mem component of MediaTek chipsets. Improper input validation may enable a local attacker with existing System privileges to escalate their privileges further. Exploitation requires user interaction. The affected products include specific MediaTek chipset models such as MT8186, MT8188, MT8195, MT8365, MT8370, MT8371, MT8390, MT8391, and MT8395. There is no available CVSS score or vendor advisory indicating patch availability or remediation status at this time.
Potential Impact
The vulnerability could lead to local escalation of privilege on affected MediaTek chipsets if a malicious actor already has System-level access. This increases the attacker's control over the system, potentially allowing unauthorized actions beyond their initial privilege level. However, exploitation requires user interaction and prior System privileges, limiting the scope of impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is documented, users and administrators should monitor MediaTek advisories for updates. No specific mitigations are provided at this time.
CVE-2026-20469: CWE-123 Write-what-where Condition in MediaTek, Inc. MediaTek chipset
Description
CVE-2026-20469 is a write-what-where condition vulnerability in MediaTek chipsets related to improper input validation in the trusted_mem component. This flaw could allow a local attacker, who already has System privileges, to escalate their privileges further. Exploitation requires user interaction. Multiple MediaTek chipset models are affected. No CVSS score or official patch information is currently available.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a write-what-where condition (CWE-123) in the trusted_mem component of MediaTek chipsets. Improper input validation may enable a local attacker with existing System privileges to escalate their privileges further. Exploitation requires user interaction. The affected products include specific MediaTek chipset models such as MT8186, MT8188, MT8195, MT8365, MT8370, MT8371, MT8390, MT8391, and MT8395. There is no available CVSS score or vendor advisory indicating patch availability or remediation status at this time.
Potential Impact
The vulnerability could lead to local escalation of privilege on affected MediaTek chipsets if a malicious actor already has System-level access. This increases the attacker's control over the system, potentially allowing unauthorized actions beyond their initial privilege level. However, exploitation requires user interaction and prior System privileges, limiting the scope of impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is documented, users and administrators should monitor MediaTek advisories for updates. No specific mitigations are provided at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.015Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a700181bf32cb7a34d5c9eb
Added to database: 08/03/2026, 02:48:33 UTC
Last enriched: 08/03/2026, 03:24:21 UTC
Last updated: 08/03/2026, 03:24:21 UTC
Views: 2
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