CVE-2026-53920

odhcpd is the DHCPv6, DHCPv4, and router-advertisement server used by OpenWrt. From version 17.01.0 to before version 25.12.3, odhcpd's DHCPv6 IA parser accepts an IANA or IAPD option whose body is shorter than struct dhcpv6iahdr, casts the option header to that full structure, and reads ia-iaid...

CVE-2026-53920 odhcpd DHCPv6 Short IA_NA/IA_PD Body Stack Disclosure

odhcpd is the DHCPv6, DHCPv4, and router-advertisement server used by OpenWrt. From version 17.01.0 to before version 25.12.3, odhcpd's DHCPv6 IA parser accepts an IANA or IAPD option whose body is shorter than struct dhcpv6iahdr, casts the option header to that full structure, and reads ia-iaid...

CVE-2026-53920

The odhcpd DHCPv6, DHCPv4, and router-advertisement server (used by OpenWrt ) is vulnerable to a stack disclosure in versions 17.01.0 through before 25.12.3 . The vulnerability exists because the DHCPv6 IA parser accepts IA_NA or IA_PD options with bodies shorter than the expected struct dhcpv6_i...