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Vulnerabilities

Security fix · CVE-2026-20455

In geniezone, there is a possible out of bounds write due to a missing bounds check.

Published Jun 1, 2026 · catalog updated Jul 22, 2026 · mt6739 firmware

Check if you run it

No confirmed exploitation is on record for CVE-2026-20455. EPSS is 0.11%. Act only if a listed version of mt6739 firmware is installed.

Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.11%
Remediation
Advisory link
Affected products
cpe mediatek/mt6739 firmware · cpe mediatek/mt6761 firmware · cpe mediatek/mt6765 firmware · cpe mediatek/mt6768 firmware · cpe mediatek/mt6781 firmware · cpe mediatek/mt6789 firmware

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe mediatek/mt6739 firmwareversion unspecified
  • cpe mediatek/mt6761 firmwareversion unspecified
  • cpe mediatek/mt6765 firmwareversion unspecified
  • cpe mediatek/mt6768 firmwareversion unspecified
  • cpe mediatek/mt6781 firmwareversion unspecified
  • cpe mediatek/mt6789 firmwareversion unspecified
  • cpe mediatek/mt6835 firmwareversion unspecified
  • cpe mediatek/mt6853 firmwareversion unspecified
  • cpe mediatek/mt6855 firmwareversion unspecified
  • cpe mediatek/mt6877 firmwareversion unspecified
  • cpe mediatek/mt6878 firmwareversion unspecified
  • cpe mediatek/mt6879 firmwareversion unspecified

How to fix CVE-2026-20455

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-20455. EPSS is 0.11%. Act only if a listed version of mt6739 firmware is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 0.11%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 1, 2026 · NIST NVD

    Detected

    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.

  2. Jul 22, 2026 · NIST NVD

    Updated

    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.

Sources

  • FIRST EPSSExploitation probabilityCVE-2026-20455

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-20455

    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:

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.