CVE-2025-23018

IPv4-in-IPv6 and IPv6-in-IPv6 tunneling (RFC 2473) do not require the validation or verification of the source of a network packet, allowing an attacker to spoof and route arbitrary traffic via an exposed network interface. This is a similar issue to CVE-2020-10136.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://datatracker.ietf.org/doc/html/rfc2473	Technical Description
https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf	Technical Description
https://www.top10vpn.com/research/tunneling-protocol-vulnerability/	Technical Description
https://www.kb.cert.org/vuls/id/199397

Configurations

Configuration 1 (hide)

cpe:2.3:a:ietf:ipv6:-:*:*:*:*:*:*:*

History

03 Nov 2025, 21:19

Type	Values Removed	Values Added
References		() https://www.kb.cert.org/vuls/id/199397 -

Information

Published : 2025-01-14 20:15

Updated : 2025-11-03 21:19

NVD link : CVE-2025-23018

Mitre link : CVE-2025-23018

CVE.ORG link : CVE-2025-23018

JSON object : View

Products Affected

ietf

ipv6

CWE

CWE-940

Improper Verification of Source of a Communication Channel

NVD-CWE-Other

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