CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HOpenWrt is a Linux operating system targeting embedded devices. Prior to 25.12.5, odhcpd writes a DHCPv6 client FQDN option 39 hostname into /tmp/odhcpd.leases through src/statefiles.c statefiles_write_state6() and statefiles_write_state4() without escaping, allowing newline injection of forged lease lines that LuCI rpcd-mod-luci getDHCPLeases displays through htdocs/luci-static/resources/view/status/include/40_dhcp.js and htdocs/luci-static/resources/luci.js dom.append as live HTML in the Active DHCPv6 Leases admin page. This vulnerability is fixed in 25.12.5.
OpenWrt has released version 24.10.8 to address a critical vulnerability (CVE-2026-53921) in its DHCPv6 stack, allowing unauthenticated attackers to execute code as root on devices running the firmware. The vulnerability…
