{"id":"CVE-2019-5892","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-5892","generatedAt":"2026-10-27T23:26:01.576Z","title":"bgpd in FRRouting FRR (aka Free Range Routing) 2.x and 3.x before 3.0.4, 4.x before 4.0.1, 5.x before 5.0.2, and 6.x before 6.0.2 (not affecting Cumulus Linux or VyOS), when ENABLE_BGP_VNC is used for Virtual Network Control, allows remote attackers to…","description":"bgpd in FRRouting FRR (aka Free Range Routing) 2.x and 3.x before 3.0.4, 4.x before 4.0.1, 5.x before 5.0.2, and 6.x before 6.0.2 (not affecting Cumulus Linux or VyOS), when ENABLE_BGP_VNC is used for Virtual Network Control, allows remote attackers to cause a denial of service (peering session flap) via attribute 255 in a BGP UPDATE packet. This occurred during Disco in January 2019 because FRR does not implement RFC 7606, and therefore the packets with 255 were considered invalid VNC data and the BGP session was closed.","published":"2019-01-10T17:29:00.000Z","lastModified":"2026-06-17T02:38:24.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-436"],"affected":["frrouting/frrouting"],"epss":{"score":0.02718,"percentile":0.85919,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.72%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://frrouting.org/community/security/cve-2019-5892.html","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/FRRouting/frr/releases/tag/frr-3.0.4","tags":["Release Notes","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/FRRouting/frr/releases/tag/frr-4.0.1","tags":["Release Notes","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/FRRouting/frr/releases/tag/frr-5.0.2","tags":["Release Notes","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/FRRouting/frr/releases/tag/frr-6.0.2","tags":["Release Notes","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.frrouting.org/pipermail/frog/2019-January/000404.html","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://frrouting.org/community/security/cve-2019-5892.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/FRRouting/frr/commit/943d595a018e69b550db08cccba1d0778a86705a","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/FRRouting/frr/releases/tag/frr-3.0.4","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/FRRouting/frr/releases/tag/frr-4.0.1","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/FRRouting/frr/releases/tag/frr-5.0.2","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/FRRouting/frr/releases/tag/frr-6.0.2","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.frrouting.org/pipermail/frog/2019-January/000404.html","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-5892","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."}