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.

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.

EPSS: 0.009 (56.1th percentile) — read the EPSS interpretation.

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.

Affected products

Ietf Ipv6 — versions 6

Weakness classification (CWE)

CWE-940 — Improper Verification of Source of a Communication Channel

Public proof-of-concept exploits

vanhoefm/tunneltester

References

cve@mitre.org (Technical Description)
cve@mitre.org (Technical Description)
cve@mitre.org (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.