CVE-2026-20586

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.

Score

CVSS 3.1 8.8 High

Status

Analyzed - security@mediatek.com

Published

2026-10-05

Last modified

2026-10-21

Weaknesses

CWE-787

Affected products

• Mt2718 Firmware (Mediatek)
• Mt6768 Firmware (Mediatek)
• Mt6769 Firmware (Mediatek)
• Mt6789 Firmware (Mediatek)
• Mt6833 Firmware (Mediatek)
• Mt6855 Firmware (Mediatek)
• Mt6877 Firmware (Mediatek)
• Mt8186 Firmware (Mediatek)
• Mt8188 Firmware (Mediatek)
• Mt8189 Firmware (Mediatek)
• Mt8195 Firmware (Mediatek)
• Mt8196 Firmware (Mediatek)
• Mt8367 Firmware (Mediatek)
• Mt8391 Firmware (Mediatek)
• Mt8395 Firmware (Mediatek)
• Mt8668 Firmware (Mediatek)
• Mt8676 Firmware (Mediatek)
• Mt8678 Firmware (Mediatek)
• Mt8696 Firmware (Mediatek)
• Mt8781 Firmware (Mediatek)
• Mt8788e Firmware (Mediatek)
• Mt8792 Firmware (Mediatek)
• Mt8793 Firmware (Mediatek)
• Mt8799 Firmware (Mediatek)
• Mt8910 Firmware (Mediatek)
• Mediatek Chipset (Mediatek Inc.)

References

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