CVE-2026-20455

HIGH
7.8
CVSS Score
Published: June 1, 2026 at 03:20 AM UTC
Updated: July 22, 2026 at 07:37 AM UTC
72 products affected across 1 vendorMT6991 FirmwareMT8781 FirmwareMT8793 Firmware

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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: ALPS10873936; Issue ID: MSV-6784.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
mediatek-mt6739 (same device)
All versions
mediatek-mt6761 (same device)
All versions
mediatek-mt6765 (same device)
All versions
mediatek-mt6768 (same device)
All versions
mediatek-mt6781 (same device)
All versions
mediatek-mt6789 (same device)
All versions
mediatek-mt6835 (same device)
All versions
mediatek-mt6853 (same device)
All versions
mediatek-mt6855 (same device)
All versions
mediatek-mt6877 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

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