CVE-2025-23019 – Cisco IPv6-in-IPv4 Tunneling Exposure Vulnerability

The following table lists the changes that have been made to the
CVE-2025-23019 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Jan. 14, 2025

    Action Type Old Value New Value
    Added Description IPv6-in-IPv4 tunneling (RFC 4213) allows an attacker to spoof and route traffic via an exposed network interface.
    Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
    Added CWE CWE-940
    Added Reference https://datatracker.ietf.org/doc/html/rfc4213
    Added Reference https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf
    Added Reference https://www.top10vpn.com/research/tunneling-protocol-vulnerability/
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