{"cve":"CVE-2016-2774","nvd":{"published":"2016-03-09T15:59:00.147","modified":"2026-06-17T00:44:22.367","status":"Modified","description":"ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by establishing many sessions.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9},"cwes":["CWE-20"],"references":["http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183458.html","http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183640.html","http://lists.opensuse.org/opensuse-updates/2016-07/msg00066.html","http://rhn.redhat.com/errata/RHSA-2016-2590.html","http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html"],"products":["canonical:ubuntu_linux","debian:debian_linux","isc:dhcp"],"source":"nvd","synced_at":"2026-10-19T20:37:48.328043465+00:00"},"epss":{"cve":"CVE-2016-2774","score":0.73622,"percentile":0.9947,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}