CVE-2026-20453: CWE-787 Out-of-bounds Write in MediaTek, Inc. MediaTek chipset
CVE-2026-20453 is an out-of-bounds write vulnerability in the MediaTek chipset's geniezone component caused by a missing bounds check. This flaw could allow a local attacker who already has System privileges to escalate their privileges further without requiring user interaction. The vulnerability affects multiple MediaTek chipset versions. The CVSS score is 6.7, indicating a medium severity level. No official patch or remediation guidance has been confirmed yet.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20453) involves an out-of-bounds write in MediaTek's geniezone component due to a missing bounds check. It affects a broad range of MediaTek chipsets including MT6739, MT6761, MT6765, and many others. Exploitation requires local access with System privileges but does not require user interaction. The vulnerability could lead to escalation of privilege with high impact on confidentiality, integrity, and availability as per the CVSS vector. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
If exploited, this vulnerability could allow a local attacker with System privileges to escalate their privileges further, potentially gaining higher control over the affected device. The CVSS score of 6.7 reflects a medium severity with high impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided, users and administrators should monitor MediaTek advisories for updates. No specific mitigation steps are available from the vendor at this time.
CVE-2026-20453: CWE-787 Out-of-bounds Write in MediaTek, Inc. MediaTek chipset
Description
CVE-2026-20453 is an out-of-bounds write vulnerability in the MediaTek chipset's geniezone component caused by a missing bounds check. This flaw could allow a local attacker who already has System privileges to escalate their privileges further without requiring user interaction. The vulnerability affects multiple MediaTek chipset versions. The CVSS score is 6.7, indicating a medium severity level. No official patch or remediation guidance has been confirmed yet.
CVSS v3.1
Score 6.7medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20453) involves an out-of-bounds write in MediaTek's geniezone component due to a missing bounds check. It affects a broad range of MediaTek chipsets including MT6739, MT6761, MT6765, and many others. Exploitation requires local access with System privileges but does not require user interaction. The vulnerability could lead to escalation of privilege with high impact on confidentiality, integrity, and availability as per the CVSS vector. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
If exploited, this vulnerability could allow a local attacker with System privileges to escalate their privileges further, potentially gaining higher control over the affected device. The CVSS score of 6.7 reflects a medium severity with high impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided, users and administrators should monitor MediaTek advisories for updates. No specific mitigation steps are available from the vendor at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.013Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1d8336e29bf47b50f6ae45
Added to database: 06/01/2026, 13:03:50 UTC
Last enriched: 06/08/2026, 20:56:49 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 88
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