{"action":"Upgrade glibc to 2.41-12+deb13u3 or later.","affected":[{"fixed":"2.41-12+deb13u3","introduced":"0"}],"component":"glibc","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["2.41-12+deb13u3"],"id":"tcs_01M5NS7Q2XN06PD0F4GJ7N197G","modified_at":"2026-10-01T03:03:23.611895971Z","published_at":"2026-03-20T20:16:49.477Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-4437","https://security-tracker.debian.org/tracker/CVE-2026-4437"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-4437#Debian:13/glibc","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-4437"}],"summary":"Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C Library version 2.34 to version 2.43 could, with a crafted response from"}