Unauthenticated Endpoint Puts Millions of Intelbras Surveillance Cameras at Risk of Denial-of-Service
In 2024–2025, Kaspersky researchers discovered a denial-of-service vulnerability (CAN-2026-2035970, CVSS 4.0 score 5.1) in Intelbras IP camera firmware affecting models including the iM3B-C, iMX C, iM4 C, iM5 SC, iME 360 C, and iM7+ FC. The flaw resided in an unauthenticated firmware upgrade endpoint (/firmwareUpgrade_service/Demo) that accepted any HTTP POST request—regardless of payload validity—and forced the device into a reboot cycle, rendering it offline indefinitely when requests were repeated. With over 4 million downloads of the companion Mibo Smart app across Latin America, the attack surface was substantial. Intelbras patched the issue in firmware R.260804 following responsible disclosure. This incident underscores the persistent risk of unauthenticated management endpoints in IoT and embedded devices deployed at scale. As surveillance infrastructure becomes more deeply integrated into enterprise and critical-facility security postures, availability-disrupting vulnerabilities in these devices carry operational consequences far beyond a simple device reboot, including blind spots in physical security and compliance gaps under frameworks requiring continuous monitoring.
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