CVE-2026-20497

Geniezone Out‑of‑Bounds Write Enabling Local Privilege Escalation

Published Aug 3, 2026 CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed
Description
In geniezone, 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: ALPS10965550 / ALPS11393405; Issue ID: MSV-6941.

Analysis

AI-generated

Technical impact

In the MediaTek Geniezone component, a missing bounds check permits an out‑of‑bounds write. If an attacker can execute code with System privileges, this defect allows the attacker to overwrite adjacent memory, potentially modifying control data or other sensitive structures. The flaw can be used to elevate privileges further within the local system, but it does not grant network or remote access by itself.

Affected Systems

The vulnerability affects MediaTek, Inc. chipsets that incorporate the Geniezone component. No specific firmware versions are listed, so all affected MediaTek devices running this component are potentially vulnerable until remedied.

Risk and Exploitability

The exploit requires that the attacker already possess System or higher privileges on the device, meaning it is a local privilege escalation vector and user interaction is not needed. The CVSS score is 6, and the EPSS score is <1%, with the vulnerability not listed in KEV. Nonetheless, once privilege is reached, the impact is severe, enabling arbitrary code execution or further privilege escalation within the system. The risk is high for environments where devices run unpatched firmware or are accessible to malicious users with local access.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update the firmware to a version that includes patch ALPS10965550 or ALPS11393405 to fix the bounds check error
  • If firmware cannot be updated immediately, disable or withdraw the Geniezone component from active use to prevent exploitation
  • Monitor system logs for anomalous memory write attempts or privilege escalation attempts to detect any residual exploitation attempts

Generated by OpenCVE AI on August 4, 2026 at 10:50 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mediatek
Mediatek mt6989
Mediatek mt6989 Firmware
Mediatek mt8755
Mediatek mt8755 Firmware
Mediatek mt8768
Mediatek mt8768 Firmware
Mediatek mt8771
Mediatek mt8771 Firmware
Mediatek mt8775
Mediatek mt8775 Firmware
Mediatek mt8781
Mediatek mt8781 Firmware
Mediatek mt8791t
Mediatek mt8791t Firmware
Mediatek mt8792
Mediatek mt8792 Firmware
Mediatek mt8796
Mediatek mt8796 Firmware
Mediatek mt8797
Mediatek mt8797 Firmware
Mediatek mt8798
Mediatek mt8798 Firmware
CPEs cpe:2.3:h:mediatek:mt6989:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8755:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8768:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8771:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8775:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8791t:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8796:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8797:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8798:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6989_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8755_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8768_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8771_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8775_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8781_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:mt8797_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8798_firmware:-:*:*:*:*:*:*:*
Vendors & Products Mediatek
Mediatek mt6989
Mediatek mt6989 Firmware
Mediatek mt8755
Mediatek mt8755 Firmware
Mediatek mt8768
Mediatek mt8768 Firmware
Mediatek mt8771
Mediatek mt8771 Firmware
Mediatek mt8775
Mediatek mt8775 Firmware
Mediatek mt8781
Mediatek mt8781 Firmware
Mediatek mt8791t
Mediatek mt8791t Firmware
Mediatek mt8792
Mediatek mt8792 Firmware
Mediatek mt8796
Mediatek mt8796 Firmware
Mediatek mt8797
Mediatek mt8797 Firmware
Mediatek mt8798
Mediatek mt8798 Firmware
Type Values Removed Values Added
Title Geniezone Out‑of‑Bounds Write Enabling Local Privilege Escalation
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'}

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
Description In geniezone, 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: ALPS10965550 / ALPS11393405; Issue ID: MSV-6941.
Weaknesses CWE-787
References