Unrated severityNVD Advisory· Published Jan 14, 2025· Updated Nov 3, 2025

CVE-2025-23018

Description

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.

Affected products

Ietf/Ipv6v5
Range: 6

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

datatracker.ietf.org/doc/html/rfc2473mitre
papers.mathyvanhoef.com/usenix2025-tunnels.pdfmitre
www.top10vpn.com/research/tunneling-protocol-vulnerability/mitre

News mentions

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