Critical severity9.8NVD Advisory· Published Sep 22, 2026· Updated Sep 23, 2026
CVE-2026-87121
CVE-2026-87121
Description
lwIP TCP/IP Stack MQTT is vulnerable to an out-of-bounds write, which may allow an attacker to gain full code execution on the device.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2Patches
Vulnerability mechanics
References
3News mentions
1- lwIP TCP/IP Stack MQTT Client ApplicationCISA ICS Advisories