{"id":"CVE-2025-23018","state":"PUBLISHED","title":"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 arbitrar","description":"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.","publishedAt":"2025-01-14T00:00:00.000Z","updatedAt":"2025-11-03T21:00:13.443Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N","source":"mitre"},"assigner":"mitre","products":["IETF IPv6"],"affected":[{"vendor":"IETF","product":"IPv6","defaultStatus":"unknown","versions":[{"version":"6","status":"affected","versionType":"custom"}]}],"references":["https://datatracker.ietf.org/doc/html/rfc2473","https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf","https://www.top10vpn.com/research/tunneling-protocol-vulnerability/","https://www.kb.cert.org/vuls/id/199397"],"weaknesses":["CWE-940"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/23xxx/CVE-2025-23018.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-23018","state":"PUBLISHED","datePublished":"2025-01-14T00:00:00.000Z","dateUpdated":"2025-11-03T21:00:13.443Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2025-01-10T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"IETF","product":"IPv6","defaultStatus":"unknown","versions":[{"version":"6","status":"affected","versionType":"custom"}]}],"references":[{"url":"https://datatracker.ietf.org/doc/html/rfc2473"},{"url":"https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf"},{"url":"https://www.top10vpn.com/research/tunneling-protocol-vulnerability/"}],"metrics":[{"cvssV3_1":{"version":"3.1","baseScore":5.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-940","description":"CWE-940 Improper Verification of Source of a Communication Channel","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2025-01-14T19:51:42.363Z"},"x_generator":{"engine":"enrichogram 0.0.1"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ietf:ipv6:*:*:*:*:*:*:*:*","versionStartIncluding":"6","versionEndIncluding":"6"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2025-23018","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-01-15T19:38:35.023118Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-02-12T20:31:20.585Z"}},{"title":"CVE Program Container","references":[{"url":"https://www.kb.cert.org/vuls/id/199397"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T21:00:13.443Z"}}]}}}