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7.8

NetX Duo MQTT client can exhaust network resources

CVE-2026-102762 · published 1 month ago
Summary

The NetX Duo MQTT client does not properly release memory when it receives a malformed publish message. An attacker who sends enough of these messages can fill the device's network buffer, causing all incoming traffic to stop until the device is rebooted. Apply the vendor's update or patch to fix the memory handling and prevent this condition.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
eclipse foundation netx duo <= 6.5.1.202602
Original advisory text
The NetX Duo MQTT client leaks the packet carrying a malformed PUBLISH message. Each malformed PUBLISH costs one packet, or one chain of packets, from the network driver's receive pool, and nothing...
The NetX Duo MQTT client leaks the packet carrying a malformed PUBLISH message. Each malformed PUBLISH costs one packet, or one chain of packets, from the network driver's receive pool, and nothing returns it. A peer that can deliver a few dozen such messages exhausts the pool and stops all inbound network traffic on the device until it is rebooted.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
7.8 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-401Memory Leak
Timeline
Published29 Sep 2026
Updated29 Oct 2026
First seen29 Sep 2026
Sources
CVE-2026-102762 · NVD
CVE-2026-102762 · MITRE
CVE-2026-102762 · OSV
GHSA-9v23-qwp9-2q3h · GHSA
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