{"action":"Upgrade screen to 4.8.0-5 or later.","affected":[{"fixed":"4.8.0-5","introduced":"0"}],"component":"screen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.8.0-5"],"id":"tcs_01M5NFGFHSMQ0WRB7KBZBF4YJ1","modified_at":"2026-10-23T18:03:25.411860767Z","published_at":"2021-02-09T20:15:14.910Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-26937","https://security-tracker.debian.org/tracker/CVE-2021-26937"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-26937#Debian:14/screen","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-26937"}],"summary":"encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write access and application crash) or possibly have unspecified other impact via a crafted UTF-8 c"}