{"id":"CVE-2026-101303","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-101303","generatedAt":"2026-10-27T22:46:50.485Z","title":"A process in a classic (non-VNET) jail can send UDP datagrams to services listening on the host's IPv6 loopback address, bypassing jail network isolation.","description":"The IPv6 UDP send path for unconnected sockets did not apply the jail policy of rewriting a loopback destination address to the jail's primary IPv6 address.\n\nA process in a classic (non-VNET) jail can send UDP datagrams to services listening on the host's IPv6 loopback address, bypassing jail network isolation.","published":"2026-10-15T07:17:57.000Z","lastModified":"2026-10-20T00:17:27.000Z","status":"Analyzed","sourceIdentifier":"secteam@freebsd.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-941"],"affected":["freebsd/freebsd"],"epss":{"score":0.00211,"percentile":0.11322,"date":"2026-10-26","history":[{"date":"2026-10-15","score":0.00191,"percentile":0.08204}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-16T21:30:17.000Z","detail":{"from":null,"score":"7.5","severity":"HIGH","fromSeverity":null},"summary":"Now scored CVSS 7.5 HIGH."},{"kind":"new","label":"New CVE","at":"2026-10-15T07:17:57.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-15T07:17:57.437Z"},"summary":"New CVE, high severity (CVSS 7.5)."}],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:69.udp.asc","tags":["Patch","Vendor Advisory"],"source":"secteam@freebsd.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-101303","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}