What’s Vulnerable › Vulnerabilities

CVE-2018-15479

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-08-30 · updated 2026-06-17
• Weakness: CWE-287

Description

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; before 3.80 — fixed in 2.66, 3.80

How to fix

Upgrade to a fixed version: Mystrom Wifi Bulb Firmware 2.58; Mystrom Wifi Button Firmware 2.73; Mystrom Wifi Button Plus Firmware 2.73; Mystrom Wifi Led Strip Firmware 3.80; Mystrom Wifi Switch Eu Firmware 3.80; Mystrom Wifi Switch Firmware 2.66, 3.80. Check the vendor advisory for mitigations.

References

• https://www.swisscom.ch/content/dam/swisscom/de/about/nachhaltigkeit/digitale-schweiz/sicherheit/bug-bounty/files/cve-2018-15476ff.txt
• https://www.swisscom.ch/content/dam/swisscom/de/about/nachhaltigkeit/digitale-schweiz/sicherheit/bug-bounty/files/cve-2018-15476ff.txt

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