What’s Vulnerable › Vulnerabilities

CVE-2026-20477

• Severity: medium (CVSS 6.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-03 · updated 2026-10-23
• Weakness: CWE-787

Description

In display, 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: ALPS11009963; Issue ID: MSV-7658.

Affected products

• Mediatek Mt6991 Firmware: all versions
• Mediatek Mt6993 Firmware: all versions
• Mediatek Mt8188 Firmware: all versions
• Mediatek Mt8189 Firmware: all versions
• Mediatek Mt8668 Firmware: all versions
• Mediatek Mt8676 Firmware: all versions
• Mediatek Mt8678 Firmware: all versions
• Mediatek Mt8781 Firmware: all versions
• Mediatek Mt8799 Firmware: all versions
• Mediatek Mt8910 Firmware: all versions

References

• https://www.mediatek.com/product-security-bulletin/August-2026

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