{"action":"Upgrade nagios4 to 4.3.4-3 or later.","affected":[{"fixed":"4.3.4-3","introduced":"0"}],"component":"nagios4","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["4.3.4-3"],"id":"tcs_01M5ND19AR4QNM143CHV3WF5HT","modified_at":"2026-10-23T18:02:59.499366362Z","published_at":"2018-07-12T18:29:00.497Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-13458","https://security-tracker.debian.org/tracker/CVE-2018-13458"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-13458#Debian:13/nagios4","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-13458"}],"summary":"qh_core in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attackers to cause a local denial-of-service condition by sending a crafted payload to the l"}