CVE-2026-20535: CWE-862 Missing Authorization in MediaTek, Inc. MediaTek chipset
Description
CVE-2026-20535 is a missing authorization vulnerability in MediaTek chipsets affecting multiple models. The flaw exists in the aidl component where a permission check is missing, potentially allowing local escalation of privilege. Exploitation does not require user interaction but does require the attacker to already have System privilege. A patch identified as ALPS11185216 addresses this issue.
Affected software
MediaTek, Inc.
MediaTek chipset
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-862) in MediaTek chipsets involves a missing permission check in the aidl component, which could allow a local attacker with System privileges to escalate their privileges further. The issue affects specific MediaTek chipset models including MT6878, MT6881, MT6899, MT6989, MT6991, MT6993, MT8188, MT8189, MT8668, MT8781, MT8793, and MT8910. Exploitation does not require user interaction. The vendor has assigned Patch ID ALPS11185216 to address this vulnerability.
Potential Impact
An attacker who already has System privileges on an affected MediaTek chipset could exploit this vulnerability to escalate their privileges further, potentially gaining higher-level access or control. No user interaction is required for exploitation. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch identified as ALPS11185216 is available for this vulnerability. Users and vendors should apply this official fix to affected MediaTek chipsets to remediate the issue. No additional mitigation guidance is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.035Z
- State
- PUBLISHED
Threat ID: 6ac309152cdf04f656a0bfa2
Added to database: 10/05/2026, 02:19:01 UTC
Last enriched: 10/05/2026, 02:34:11 UTC
Last updated: 10/05/2026, 02:34:11 UTC
Views: 6
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