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lwIP CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

CRITICAL lwIP CVE published 2026-05-18

CVE-2026-8836

A critical stack-based buffer overflow vulnerability exists in lwIP's SNMPv3 USM handler. The flaw resides in the snmp_parse_inbound_frame function within src/apps/snmp/snmp_msg.c, where improper handling of the msgAuthenticationParameters argument allows remote attackers to trigger memory corruption. This vulnerability affects lwIP versions up to and including 2.2.1. The attack vector is network-based wi [truncated]