CVE-2018-3891: Yitechnology Yi Home Camera Firmware

Medium severity, CVSS 4.6. EPSS: 0.4% chance of exploitation in the next 30 days.

An exploitable firmware downgrade vulnerability exists in the firmware update functionality of Yi Home Camera 27US 1.8.7.0D. A specially crafted file can cause a logic flaw, resulting in a firmware downgrade. An attacker can insert an SD card to trigger this vulnerability.

Affected products

Published 2018-11-02. Last modified 2026-06-17.