CVE-2026-20489: CWE-125 Out-of-bounds Read in MediaTek, Inc. MediaTek chipset
CVE-2026-20489 is an out-of-bounds read vulnerability in MediaTek chipsets caused by an integer overflow in the display component. It can lead to local information disclosure if an attacker already has System privileges. Exploitation does not require user interaction. The vulnerability affects multiple MediaTek chipset models. The CVSS score is 4.4, indicating medium severity.
AI Analysis
Technical Summary
This vulnerability involves an integer overflow in the display functionality of MediaTek chipsets, resulting in a possible out-of-bounds read (CWE-125). An attacker with System-level privileges can exploit this flaw to disclose information locally without needing user interaction. The affected chipsets include MT6991, MT6993, MT8126, MT8171, MT8188, MT8189, MT8367, MT8668, MT8676, MT8678, MT8766, MT8768, MT8781, MT8786, MT8799, and MT8910. There is no vendor advisory or patch information provided, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation can lead to local information disclosure on affected MediaTek chipsets. The attacker must already have System privileges to exploit this vulnerability. There is no impact on integrity or availability reported. The medium CVSS score reflects the limited scope and required privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch information is provided, users should monitor MediaTek advisories for updates. No additional mitigation recommendations are available from the vendor at this time.
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 in MediaTek chipsets caused by an integer overflow in the display component. It can lead to local information disclosure if an attacker already has System privileges. Exploitation does not require user interaction. The vulnerability affects multiple MediaTek chipset models. The CVSS score is 4.4, indicating medium severity.
CVSS v3.1
Score 4.4medium
Affected software
MediaTek, Inc.
MediaTek chipset
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 a possible out-of-bounds read (CWE-125). An attacker with System-level privileges can exploit this flaw to disclose information locally without needing user interaction. The affected chipsets include MT6991, MT6993, MT8126, MT8171, MT8188, MT8189, MT8367, MT8668, MT8676, MT8678, MT8766, MT8768, MT8781, MT8786, MT8799, and MT8910. There is no vendor advisory or patch information provided, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation can lead to local information disclosure on affected MediaTek chipsets. The attacker must already have System privileges to exploit this vulnerability. There is no impact on integrity or availability reported. The medium CVSS score reflects the limited scope and required privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch information is provided, users should monitor MediaTek advisories for updates. No additional mitigation recommendations are available from the vendor at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.023Z
- State
- PUBLISHED
Threat ID: 6a700184bf32cb7a34d5cac8
Added to database: 08/03/2026, 02:48:36 UTC
Last enriched: 08/10/2026, 15:01:37 UTC
Last updated: 09/16/2026, 22:01:33 UTC
Views: 31
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