CVE-2026-20489: CWE-125 Out-of-bounds Read in MediaTek, Inc. MediaTek chipset
CVE-2026-20489 is an out-of-bounds read vulnerability (CWE-125) in MediaTek chipsets caused by an integer overflow in the display component. Exploitation requires the attacker to have System privilege already, and no user interaction is needed. The vulnerability could lead to local information disclosure. Multiple MediaTek chipset versions are affected. No patch or official remediation guidance is currently available.
AI Analysis
Technical Summary
This vulnerability involves an integer overflow in the display functionality of MediaTek chipsets, resulting in an out-of-bounds read condition. This flaw can cause local information disclosure if exploited by an attacker with System privileges. The issue affects specific MediaTek chipset models including MT6991, MT6993, MT8126, MT8171, MT8188, MT8189, MT8367, MT8668, MT8676, MT8678, MT8766, MT8768, MT8781, MT8786, MT8799, and MT8910. There is no indication of public exploits in the wild or a CVSS score assigned. No patch or remediation level has been published yet.
Potential Impact
An attacker with System privileges can exploit this vulnerability to read memory out-of-bounds, potentially disclosing sensitive local information. Since exploitation requires elevated privileges, the impact is limited to scenarios where such access is already obtained. There is no evidence of remote exploitation or user interaction requirements.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, ensure that System privileges are tightly controlled to prevent unauthorized access. Monitor vendor communications for updates on patches or mitigations.
CVE-2026-20489: CWE-125 Out-of-bounds Read in MediaTek, Inc. MediaTek chipset
Description
CVE-2026-20489 is an out-of-bounds read vulnerability (CWE-125) in MediaTek chipsets caused by an integer overflow in the display component. Exploitation requires the attacker to have System privilege already, and no user interaction is needed. The vulnerability could lead to local information disclosure. Multiple MediaTek chipset versions are affected. No patch or official remediation guidance is currently available.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer overflow in the display functionality of MediaTek chipsets, resulting in an out-of-bounds read condition. This flaw can cause local information disclosure if exploited by an attacker with System privileges. The issue affects specific MediaTek chipset models including MT6991, MT6993, MT8126, MT8171, MT8188, MT8189, MT8367, MT8668, MT8676, MT8678, MT8766, MT8768, MT8781, MT8786, MT8799, and MT8910. There is no indication of public exploits in the wild or a CVSS score assigned. No patch or remediation level has been published yet.
Potential Impact
An attacker with System privileges can exploit this vulnerability to read memory out-of-bounds, potentially disclosing sensitive local information. Since exploitation requires elevated privileges, the impact is limited to scenarios where such access is already obtained. There is no evidence of remote exploitation or user interaction requirements.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, ensure that System privileges are tightly controlled to prevent unauthorized access. Monitor vendor communications for updates on patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.023Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a700184bf32cb7a34d5cac8
Added to database: 08/03/2026, 02:48:36 UTC
Last enriched: 08/03/2026, 03:07:56 UTC
Last updated: 08/03/2026, 03:07:56 UTC
Views: 2
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