{"cve":"CVE-2013-4559","nvd":{"published":"2013-11-20T14:12:30.727","modified":"2026-06-16T23:57:27.147","status":"Modified","description":"lighttpd before 1.4.33 does not check the return value of the (1) setuid, (2) setgid, or (3) setgroups functions, which might cause lighttpd to run as root if it is restarted and allows remote attackers to gain privileges, as demonstrated by multiple calls to the clone function that cause setuid to fail when the user process limit is reached.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2013_02.txt","http://jvn.jp/en/jp/JVN37417423/index.html","http://lists.opensuse.org/opensuse-updates/2014-01/msg00049.html","http://marc.info/?l=bugtraq&m=141576815022399&w=2","http://secunia.com/advisories/55682"],"products":["debian:debian_linux","lighttpd:lighttpd","opensuse:opensuse"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2013-4559","score":0.10721,"percentile":0.9582,"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."]}