{"cve":"CVE-2013-4421","nvd":{"published":"2013-10-25T23:55:03.847","modified":"2026-06-16T23:57:11.960","status":"Modified","description":"The buf_decompress function in packet.c in Dropbear SSH Server before 2013.59 allows remote attackers to cause a denial of service (memory consumption) via a compressed packet that has a large size when it is decompressed.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-189"],"references":["http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119300.html","http://lists.fedoraproject.org/pipermail/package-announce/2013-October/119323.html","http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html","http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html","http://secunia.com/advisories/55173"],"products":["dropbear_ssh_project:dropbear_ssh"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2013-4421","score":0.06424,"percentile":0.93708,"date":"2026-11-01"},"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."]}