CVE-2026-107837

Summary

A buffer over-read vulnerability in RIOT OS allows remote attackers to read beyond packet buffers during 6LoWPAN fragment processing, potentially leading to memory disclosure and network stack crashes. This affects IoT devices running vulnerable versions of the operating system.

Exploitability

Exploitation is relatively straightforward for remote attackers who can send malformed 6LoWPAN fragments, requiring minimal preconditions beyond network access to the affected device.

Blast radius

The vulnerability impacts a wide range of IoT and embedded devices using RIOT OS 2026.07 or earlier, potentially causing widespread network instability and information disclosure across connected systems.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

No fixed repository release is available as of this review; defenders should disable 6LoWPAN fragment processing or implement network-level restrictions to prevent malformed fragments from reaching affected devices until a fix is published.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.