CVE-2025-23019

IPv6-in-IPv4 tunneling (RFC 4213) allows an attacker to spoof and route traffic via an exposed network interface.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.4 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
mitreCNA
5.4 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 17%
VendorProductVersion
ietfipv6
-
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://datatracker.ietf.org/doc/html/rfc4213
https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf
https://www.top10vpn.com/research/tunneling-protocol-vulnerability/