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4.6

Yi Home Camera can be forced to install older firmware

CVE-2018-3891 · published 8 years ago
Summary

The Yi Home Camera (firmware version 1.8.7.0D) can be tricked into loading an older version of its software if someone inserts a specially crafted file on an SD card. This could let an attacker roll back to a less secure version and potentially gain control of the camera. Update the camera to the latest firmware and avoid inserting unknown SD cards.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
yitechnology yi_home_camera_firmware 1.8.7.0d
cpe:2.3:o:yitechnology:yi_home_camera_firmware:1.8.7.0d:*:*:*:*:*:*:*
Original advisory text
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...
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
4.6 Medium
Exploitation
<1% chance of attack within 30 days
Timeline
Published2 Nov 2018
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2018-3891 · NVD
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