CVE-2026-45160 ESF-IDF: Out-of-bounds Read in lwIP DHCP Server Option Parser

ESF-IDF is the Espressif Internet of Things IOT Development Framework. In versions 5.2.7, 5.3.5, 5.4.4, 5.5.4, and 6.0.1, an out-of-bounds read flaw exists in the DHCP server option parser parseoptions in components/lwip/apps/dhcpserver/dhcpserver.c shipped with ESP-IDF's lwIP component. The pars...

CVE-2026-45160

ESF-IDF’s ESP-IDF lwIP DHCP server option parser (parse_options in dhcpserver.c) has an out-of-bounds read in the BOOTP/DHCP options parsing. In affected releases 5.2.7, 5.3.5, 5.4.4, 5.5.4 and 6.0.1, a crafted DHCP request can cause reads past the end of the options buffer into adjacent heap mem...