What’s Vulnerable › Vulnerabilities

CVE-2026-20586

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-05 · updated 2026-10-30
• Weakness: CWE-787

Description

In vdec, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS11383899; Issue ID: MSV-9614.

Affected products

• Mediatek Mt2718 Firmware: all versions
• Mediatek Mt6768 Firmware: all versions
• Mediatek Mt6769 Firmware: all versions
• Mediatek Mt6789 Firmware: all versions
• Mediatek Mt6833 Firmware: all versions
• Mediatek Mt6855 Firmware: all versions
• Mediatek Mt6877 Firmware: all versions
• Mediatek Mt8186 Firmware: all versions
• Mediatek Mt8188 Firmware: all versions
• Mediatek Mt8189 Firmware: all versions
• Mediatek Mt8195 Firmware: all versions
• Mediatek Mt8196 Firmware: all versions
• Mediatek Mt8367 Firmware: all versions
• Mediatek Mt8391 Firmware: all versions
• Mediatek Mt8395 Firmware: all versions
• Mediatek Mt8668 Firmware: all versions
• Mediatek Mt8676 Firmware: all versions
• Mediatek Mt8678 Firmware: all versions
• Mediatek Mt8696 Firmware: all versions
• Mediatek Mt8781 Firmware: all versions
• Mediatek Mt8788E Firmware: all versions
• Mediatek Mt8792 Firmware: all versions
• Mediatek Mt8793 Firmware: all versions
• Mediatek Mt8799 Firmware: all versions
• Mediatek Mt8910 Firmware: all versions
• MediaTek, Inc. MediaTek chipset: MT6768, MT6769, MT6789, MT6833, MT6855, MT6877 (+5)

References

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

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