CRITICAL 9.3 NVD
CVE-2026-87121
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.
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.
References
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-265-01.json
- https://savannah.nongnu.org/projects/lwip
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-265-01
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-09-22 via NVD.
Risk Timeline
CVE Disclosed2026-09-22 · -1 days ago
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