Vulnerability · Published Jan 14, 2025 · Assigned by mitre

CVE-2025-23019

Medium 5.4

In plain English

A medium-severity security flaw in IPv6 from IETF. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)1.0%top 37.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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

Affected products (as reported)

Vendor	Product	Versions
IETF	IPv6	6

Weakness: CWE-940 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

References

https://datatracker.ietf.org/doc/html/rfc4213
https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf
https://www.top10vpn.com/research/tunneling-protocol-vulnerability/
https://www.kb.cert.org/vuls/id/199397