CVE-2018-15479: Mystrom Wifi Bulb Firmware

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

An issue was discovered in myStrom WiFi Switch V1 before 2.66, WiFi Switch V2 before 3.80, WiFi Switch EU before 3.80, WiFi Bulb before 2.58, WiFi LED Strip before 3.80, WiFi Button before 2.73, and WiFi Button Plus before 2.73. Devices did not authenticate themselves to the cloud in device to cloud communication. This lack of device authentication allowed an attacker to impersonate any device by guessing or learning their MAC address.

Affected products

• Mystrom Wifi Bulb Firmware: before 2.58 (fixed in 2.58)
• Mystrom Wifi Button Firmware: before 2.73 (fixed in 2.73)
• Mystrom Wifi Button Plus Firmware: before 2.73 (fixed in 2.73)
• Mystrom Wifi Led Strip Firmware: before 3.80 (fixed in 3.80)
• Mystrom Wifi Switch Eu Firmware: before 3.80 (fixed in 3.80)
• Mystrom Wifi Switch Firmware: before 2.66 (fixed in 2.66); before 3.80 (fixed in 3.80)

Published 2018-08-30. Last modified 2026-06-17.