CVE-2025-23018

An insecure configuration flaw was found in the IPv4-in-IPv6 and IPv6-in-IPv6 protocols RFC2473. When configured to not require authentication or filtering, this issue could allow a remote unauthenticated attacker to spoof packets or bypass access controls. Mitigation See references section for...

CVE-2025-23018

IPv4-in-IPv6 and IPv6-in-IPv6 tunneling RFC 2473 do not require the validation or verification of the source of a network packet, allowing an attacker to spoof and route arbitrary traffic via an exposed network interface. This is a similar issue to CVE-2020-10136...

CVE-2025-23018

CVE-2025-23018 covers the IPv4-in-IPv6 tunneling case where RFC 2473 traffic can be accepted without validating the packet source. The result is spoofing and potential to route arbitrary traffic via an exposed network interface. Connected sources corroborate a lack of source verification for cert...