Review reviewHigh

CVE-2026-20455

MediaTek, Inc. MediaTek chipset, mt6739 firmware, mt6739

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: ALPS10873936; Issue ID: MSV-6784.

CVSS
7.8
EPSS
0.11%
1.39% percentile
CISA KEV
Not listed
Published
2026.06.01
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.11%
Technical severityCVSS 7.8

Vulnerability overview

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: ALPS10873936; Issue ID: MSV-6784.

Affected product and versions

Product
MediaTek, Inc. MediaTek chipset, mt6739 firmware, mt6739
Affected versions
>= MT6739, >= MT6761, >= MT6765, >= MT6768, >= MT6781, >= MT6789, >= MT6835, >= MT6853, >= MT6855, >= MT6877, >= MT6878, >= MT6879, >= MT6883, >= MT6885, >= MT6886, >= MT6889, >= MT6893, >= MT6895, >= MT6897, >= MT6899
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that MediaTek, Inc. MediaTek chipset, mt6739 firmware, mt6739 and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-787