{"id":"CVE-2019-25076","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-25076","generatedAt":"2026-10-27T23:27:02.491Z","title":"The TSS (Tuple Space Search) algorithm in Open vSwitch 2.x through 2.17.2 and 3.0.0 allows remote attackers to cause a denial of service (delays of legitimate traffic) via crafted packet data that requires excessive evaluation time within the packet…","description":"The TSS (Tuple Space Search) algorithm in Open vSwitch 2.x through 2.17.2 and 3.0.0 allows remote attackers to cause a denial of service (delays of legitimate traffic) via crafted packet data that requires excessive evaluation time within the packet classification algorithm for the MegaFlow cache, aka a Tuple Space Explosion (TSE) attack.","published":"2022-09-08T23:15:10.000Z","lastModified":"2026-06-17T02:31:37.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":5.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L"},"cwe":[],"affected":["openvswitch/openvswitch"],"epss":{"score":0.02357,"percentile":0.83637,"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 (2.36%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://arxiv.org/abs/2011.09107","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://dl.acm.org/citation.cfm?doid=3359989.3365431","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://sites.google.com/view/tuple-space-explosion","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.youtube.com/watch?v=5cHpzVK0D28","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.youtube.com/watch?v=DSC3m-Bww64","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://arxiv.org/abs/2011.09107","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://dl.acm.org/citation.cfm?doid=3359989.3365431","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://sites.google.com/view/tuple-space-explosion","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.youtube.com/watch?v=5cHpzVK0D28","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.youtube.com/watch?v=DSC3m-Bww64","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-25076","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."}