CVE-2025-23019

Summary

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

Affected Software

Weaknesses

• CWE-940: CWE-940 Improper Verification of Source of a Communication Channel

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

CVE Program Container

Additional References

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

References

• https://datatracker.ietf.org/doc/html/rfc4213
• https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf
• https://www.top10vpn.com/research/tunneling-protocol-vulnerability/

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