{"id":"CVE-2020-9366","aliases":["ALPINE-CVE-2020-9366","BELL-CVE-2020-9366","DEBIAN-CVE-2020-9366","EUVD-2020-30187","GHSA-fcx3-q2fc-3hrw"],"status":"published","title":"A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49....","description":"A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02706,"percentile":0.86063,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-120","CWE-787"],"published":"2020-02-24T16:20:15Z","modified":"2026-10-26T12:02:09Z","fixes":[{"ecosystem":"Alpine:v3.10","package":"screen","fixed_in":["4.6.2-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.11","package":"screen","fixed_in":["4.7.0-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.12","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.13","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.14","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"screen","fixed_in":["4.8.0-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.8","package":"screen","fixed_in":["4.6.2-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.9","package":"screen","fixed_in":["4.6.2-r1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"screen","fixed_in":["4.8.0-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"screen","fixed_in":["4.8.0-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"screen","fixed_in":["4.8.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.10","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.2-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.11","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.0-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.12","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.13","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.14","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.8","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.2-r1"}]}]},{"source":"osv","ecosystem":"Alpine:v3.9","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.2-r1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"screen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0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List","Patch","Release Notes","fix"]},{"url":"https://lists.gnu.org/archive/html/screen-devel/2020-02/msg00007.html","tags":["x_refsource_MISC","x_transferred","Mailing List","Patch","Release Notes","Vendor Advisory","fix"]},{"url":"http://www.openwall.com/lists/oss-security/2020/02/25/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://security.gentoo.org/glsa/202003-62","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9366"},{"url":"https://github.com/advisories/GHSA-fcx3-q2fc-3hrw"},{"url":"https://security.alpinelinux.org/vuln/CVE-2020-9366","tags":["advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2020-9366","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-9366","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2020-9366","description":"A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.","status":"published","published":"2020-02-24T16:20:15Z","modified":"2024-08-04T10:26:16.12Z","updated_at":"2026-11-02T14:35:49.538427Z"}],"euvd":[{"id":"EUVD-2020-30187","description":"A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.","status":"published","published":"2020-02-24T16:20:15Z","modified":"2024-08-04T10:26:16Z","updated_at":"2026-11-03T03:07:54.025234Z"}],"ghsa":[{"id":"GHSA-fcx3-q2fc-3hrw","title":"A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49....","description":"A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.","status":"published","published":"2022-05-24T17:09:35Z","modified":"2023-01-29T05:01:29Z","cwes":["CWE-120","CWE-787"],"updated_at":"2026-11-02T14:44:50.331765Z"}],"nvd":[{"id":"CVE-2020-9366","description":"A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.","status":"published","published":"2020-02-24T17:15:15.967Z","modified":"2026-06-17T03:27:49.39Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:05:54.796125Z"}],"osv":[{"id":"ALPINE-CVE-2020-9366","description":"A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.","status":"published","published":"2020-02-24T17:15:15.967Z","modified":"2026-10-26T11:17:55.207549139Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:27:48.646074Z"},{"id":"BELL-CVE-2020-9366","title":"CVE-2020-9366 does not affect BellSoft software","status":"withdrawn","published":"2023-08-31T12:13:29.552125Z","modified":"2026-01-26T09:49:19.436831Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:28:15.925958Z"},{"id":"CVE-2020-9366","description":"A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.","status":"published","published":"2020-02-24T17:15:15.967Z","modified":"2026-03-15T22:38:30.496229Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:17.663289Z"},{"id":"DEBIAN-CVE-2020-9366","description":"A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.","status":"published","published":"2020-02-24T17:15:15.967Z","modified":"2026-10-26T12:02:09.218471499Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:34.311861Z"}]}}