CVE-2026-20529

Published Oct 5, 2026 CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Description
In battery, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11276677; Issue ID: MSV-9217.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mediatek
Mediatek mt6761
Mediatek mt6761 Firmware
Mediatek mt6765
Mediatek mt6765 Firmware
Mediatek mt6768
Mediatek mt6768 Firmware
Mediatek mt6781
Mediatek mt6781 Firmware
Mediatek mt6853
Mediatek mt6853 Firmware
Mediatek mt6858
Mediatek mt6858 Firmware
Mediatek mt6881
Mediatek mt6881 Firmware
Mediatek mt6893
Mediatek mt6893 Firmware
Mediatek mt6989
Mediatek mt6989 Firmware
Mediatek mt6991
Mediatek mt6991 Firmware
Mediatek mt6993
Mediatek mt6993 Firmware
Mediatek mt8171
Mediatek mt8171 Firmware
Mediatek mt8186
Mediatek mt8186 Firmware
Mediatek mt8188
Mediatek mt8188 Firmware
Mediatek mt8189
Mediatek mt8189 Firmware
Mediatek mt8196
Mediatek mt8196 Firmware
Mediatek mt8766
Mediatek mt8766 Firmware
Mediatek mt8768
Mediatek mt8768 Firmware
Mediatek mt8775
Mediatek mt8775 Firmware
Mediatek mt8781
Mediatek mt8781 Firmware
Mediatek mt8788e
Mediatek mt8788e Firmware
Mediatek mt8791t
Mediatek mt8791t Firmware
Mediatek mt8792
Mediatek mt8792 Firmware
Mediatek mt8796
Mediatek mt8796 Firmware
Mediatek mt8799
Mediatek mt8799 Firmware
Mediatek mt8883
Mediatek mt8883 Firmware
Mediatek mt8893
Mediatek mt8893 Firmware
Mediatek mt8910
Mediatek mt8910 Firmware
CPEs cpe:2.3:h:mediatek:mt6761:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6765:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6768:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6781:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6858:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6881:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6893:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6989:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6993:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8171:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8186:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8188:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8189:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8196:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8766:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8768:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8775:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8788e:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8791t:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8796:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8799:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8883:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8893:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8910:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6761_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6765_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6768_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6781_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6853_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6858_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6881_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6893_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6989_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6993_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8171_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8186_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8188_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8189_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8196_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8766_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8768_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8775_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8781_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8788e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8791t_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8792_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8796_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8799_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8883_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8893_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8910_firmware:-:*:*:*:*:*:*:*
Vendors & Products Mediatek
Mediatek mt6761
Mediatek mt6761 Firmware
Mediatek mt6765
Mediatek mt6765 Firmware
Mediatek mt6768
Mediatek mt6768 Firmware
Mediatek mt6781
Mediatek mt6781 Firmware
Mediatek mt6853
Mediatek mt6853 Firmware
Mediatek mt6858
Mediatek mt6858 Firmware
Mediatek mt6881
Mediatek mt6881 Firmware
Mediatek mt6893
Mediatek mt6893 Firmware
Mediatek mt6989
Mediatek mt6989 Firmware
Mediatek mt6991
Mediatek mt6991 Firmware
Mediatek mt6993
Mediatek mt6993 Firmware
Mediatek mt8171
Mediatek mt8171 Firmware
Mediatek mt8186
Mediatek mt8186 Firmware
Mediatek mt8188
Mediatek mt8188 Firmware
Mediatek mt8189
Mediatek mt8189 Firmware
Mediatek mt8196
Mediatek mt8196 Firmware
Mediatek mt8766
Mediatek mt8766 Firmware
Mediatek mt8768
Mediatek mt8768 Firmware
Mediatek mt8775
Mediatek mt8775 Firmware
Mediatek mt8781
Mediatek mt8781 Firmware
Mediatek mt8788e
Mediatek mt8788e Firmware
Mediatek mt8791t
Mediatek mt8791t Firmware
Mediatek mt8792
Mediatek mt8792 Firmware
Mediatek mt8796
Mediatek mt8796 Firmware
Mediatek mt8799
Mediatek mt8799 Firmware
Mediatek mt8883
Mediatek mt8883 Firmware
Mediatek mt8893
Mediatek mt8893 Firmware
Mediatek mt8910
Mediatek mt8910 Firmware
Type Values Removed Values Added
Title Out‑of‑Bounds Write in MediaTek Battery Firmware Enables Local Privilege Escalation
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mediatek, Inc.
Mediatek, Inc. mediatek Chipset
Vendors & Products Mediatek, Inc.
Mediatek, Inc. mediatek Chipset
Type Values Removed Values Added
Title Out‑of‑Bounds Write in MediaTek Battery Firmware Enables Local Privilege Escalation
Type Values Removed Values Added
Description In battery, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11276677; Issue ID: MSV-9217.
Weaknesses CWE-787
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
MediaTek
Published
Updated
Oct 6, 2026, 3:55 AM
Reserved
Nov 3, 2025, 1:30 AM
Status
Analyzed
Published
Oct 5, 2026, 2:16 AM
Modified
Oct 9, 2026, 3:02 PM