CVE-2026-20472: CWE-787 Out-of-bounds Write in MediaTek, Inc. MediaTek chipset
CVE-2026-20472 is an out-of-bounds write vulnerability in MediaTek chipsets, specifically affecting the MT6986 model. The flaw exists in TFA due to a missing bounds check, which could allow a local attacker with System privileges to cause a denial of service. Exploitation does not require user interaction. The vulnerability has a medium severity rating with a CVSS score of 4.4.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20472) involves an out-of-bounds write in the MediaTek MT6986 chipset's TFA component caused by a missing bounds check. An attacker who already has System-level privileges on the device can exploit this flaw locally to trigger a denial of service condition. No user interaction is needed for exploitation. There is no indication of known exploits in the wild, and no official patch or remediation level has been confirmed in the provided data.
Potential Impact
The impact is limited to local denial of service, requiring the attacker to have System privileges beforehand. There is no confidentiality or integrity impact reported. The vulnerability does not require user interaction to exploit.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor MediaTek advisories for updates. No specific mitigation steps are indicated in the provided data.
CVE-2026-20472: CWE-787 Out-of-bounds Write in MediaTek, Inc. MediaTek chipset
Description
CVE-2026-20472 is an out-of-bounds write vulnerability in MediaTek chipsets, specifically affecting the MT6986 model. The flaw exists in TFA due to a missing bounds check, which could allow a local attacker with System privileges to cause a denial of service. Exploitation does not require user interaction. The vulnerability has a medium severity rating with a CVSS score of 4.4.
CVSS v3.1
Score 4.4medium
Affected software
MediaTek, Inc.
MediaTek chipset
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20472) involves an out-of-bounds write in the MediaTek MT6986 chipset's TFA component caused by a missing bounds check. An attacker who already has System-level privileges on the device can exploit this flaw locally to trigger a denial of service condition. No user interaction is needed for exploitation. There is no indication of known exploits in the wild, and no official patch or remediation level has been confirmed in the provided data.
Potential Impact
The impact is limited to local denial of service, requiring the attacker to have System privileges beforehand. There is no confidentiality or integrity impact reported. The vulnerability does not require user interaction to exploit.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor MediaTek advisories for updates. No specific mitigation steps are indicated in the provided data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.016Z
- State
- PUBLISHED
Threat ID: 6a700181bf32cb7a34d5c9f4
Added to database: 08/03/2026, 02:48:33 UTC
Last enriched: 08/10/2026, 15:00:08 UTC
Last updated: 09/15/2026, 22:01:32 UTC
Views: 41
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