Vulnerability in Ietf Ipv6
CVE-2025-23019
IPv6-in-IPv4 tunneling (RFC 4213) allows an attacker to spoof and route traffic via an exposed network interface.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.010 (61.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Ietf Ipv6 — versions 6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- datatracker.ietf.org/doc/html/rfc4213 (Technical Description)
- papers.mathyvanhoef.com/usenix2025-tunnels.pdf (Technical Description)
- www.top10vpn.com/research/tunneling-protocol-vulnerability/ (Technical Description)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-23019?
- CVE-2025-23019 is a medium-severity vulnerability in Ietf Ipv6, classified under Improper Verification of Source of a Communication Channel. CVSS score: 5.4/10. Published 2025-01-14.
- How severe is CVE-2025-23019?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2025-23019 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.