CVE-2025-23019

medium

Description

IPv6-in-IPv4 tunneling (RFC 4213) allows an attacker to spoof and route traffic via an exposed network interface.

References

References
More

https://hackread.com/tunneling-flaws-millions-of-vpns-and-routers-at-risk/

https://thehackernews.com/2025/01/unsecured-tunneling-protocols-expose-42.html

https://kb.cert.org/vuls/id/199397

https://www.securityweek.com/millions-of-internet-hosts-vulnerable-to-attacks-due-to-tunneling-protocol-flaws/

https://www.top10vpn.com/research/tunneling-protocol-vulnerability/

https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf

https://datatracker.ietf.org/doc/html/rfc4213

Details

Source: Mitre, NVD

Published: 2025-01-14

Updated: 2025-01-29

Risk Information

CVSS v2

Base Score: 5.1

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

Severity: Medium

EPSS

EPSS: 0.00044