{"id":"CVE-2017-1000256","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-1000256","generatedAt":"2026-10-28T19:19:34.097Z","title":"libvirt version 2.3.0 and later is vulnerable to a bad default configuration of \"verify-peer=no\" passed to QEMU by libvirt resulting in a failure to validate SSL/TLS certificates by default.","description":"libvirt version 2.3.0 and later is vulnerable to a bad default configuration of \"verify-peer=no\" passed to QEMU by libvirt resulting in a failure to validate SSL/TLS certificates by default.","published":"2017-10-31T15:29:00.000Z","lastModified":"2026-06-17T00:59:00.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-295"],"affected":["redhat/libvirt","debian/debian linux"],"epss":{"score":0.01714,"percentile":0.77277,"date":"2026-10-27","history":[]},"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 (1.71%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.debian.org/security/2017/dsa-4003","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://access.redhat.com/security/cve/CVE-2017-1000256","tags":["Issue Tracking","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1556251.html","source":"cve@mitre.org"},{"url":"https://www.redhat.com/archives/libvirt-announce/2017-October/msg00001.html","tags":["Issue Tracking","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.debian.org/security/2017/dsa-4003","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/security/cve/CVE-2017-1000256","tags":["Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1556251.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.redhat.com/archives/libvirt-announce/2017-October/msg00001.html","tags":["Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-1000256","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."}