{"action":"Upgrade xymon to 4.3.29-1 or later.","affected":[{"fixed":"4.3.29-1","introduced":"0"}],"component":"xymon","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["4.3.29-1"],"id":"tcs_01M5NDSSCCPCTW6K0N434W01J6","modified_at":"2026-09-21T07:00:39.366277065Z","published_at":"2019-08-27T17:15:10.570Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-13455","https://security-tracker.debian.org/tracker/CVE-2019-13455"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-13455#Debian:13/xymon","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-13455"}],"summary":"In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of   expansion in acknowledge.c."}