Shelly Pro 3EM Out-of-Bounds Read Vulnerability Allowing Denial-of-Service

Vulnerability

A vulnerability allowing an out-of-bounds read has been identified in the Shelly Pro 3EM smart device, affecting versions prior to 1.4.4. This vulnerability allows for buffer over-read, which can be exploited to cause an arbitrary reboot of the device, leading to a denial-of-service condition.

Impact

Exploitation of this vulnerability allows an unauthenticated attacker to arbitrarily reboot the device, causing a denial-of-service condition.

Remediation

It is recommended to segregate the device in a dedicated and protected network until a software patch is released.

Added: Nov 19, 2025, 7:22 AM
Updated: Nov 19, 2025, 7:22 AM

Vulnerability Rating

Custom Algorithm
spread
0.0
impact
2.5
exploitability
7.4
remediation
0.0
relevance
1.1
threat
0.0
urgency
2.9
incentive
5.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.