{"cve":"CVE-2006-5873","nvd":{"published":"2006-12-12T00:28:00.000","modified":"2026-06-16T22:32:03.087","status":"Modified","description":"Buffer overflow in the cluster_process_heartbeat function in cluster.c in layer 2 tunneling protocol network server (l2tpns) before 2.1.21 allows remote attackers to cause a denial of service via a large heartbeat packet.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://l2tpns.cvs.sourceforge.net/l2tpns/l2tpns/cluster.c?r1=1.53&r2=1.54","http://secunia.com/advisories/23230","http://secunia.com/advisories/23333","http://sourceforge.net/project/shownotes.php?group_id=97282&release_id=468202","http://www.debian.org/security/2006/dsa-1230"],"products":["debian:debian_linux","l2tpns:l2tpns"],"source":"nvd","synced_at":"2026-10-19T19:43:14.363260067+00:00"},"epss":{"cve":"CVE-2006-5873","score":0.02312,"percentile":0.83397,"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."]}