{"id":"CVE-2019-11766","aliases":["DEBIAN-CVE-2019-11766","EUVD-2019-3436","GHSA-94fh-gx35-hmvh","UBUNTU-CVE-2019-11766"],"status":"published","title":"dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the...","description":"dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.","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":0.02046,"percentile":0.81345,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2019-05-05T05:18:14Z","modified":"2026-10-24T14:03:34Z","fixes":[{"ecosystem":"Debian:12","package":"dhcpcd5","fixed_in":["7.1.0-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"dhcpcd5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.1.0-2"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"dhcpcd5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.5.6-1","6.0.5-1ubuntu1","6.0.5-1.1","6.0.5-2build0.14.04.1","6.0.5-2+deb8u1build0.14.04.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"dhcpcd5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.9.1-1","6.9.3-1","6.10.1-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"dhcpcd5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.11.5-0ubuntu1"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"dhcpcd_project","product":"dhcpcd"}],"references":[{"url":"https://bugs.debian.org/928440","tags":["x_refsource_MISC","x_transferred","Mailing List","Patch","Third Party Advisory","fix","report"]},{"url":"https://roy.marples.name/archives/dhcpcd-discuss/0002428.html","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","fix","report"]},{"url":"https://roy.marples.name/cgit/dhcpcd.git/commit/?h=dhcpcd-7\u0026id=c1ebeaafeb324bac997984abdcee2d4e8b61a8a8","tags":["x_refsource_MISC","x_transferred","Mailing List","Patch","Vendor Advisory","fix","report"]},{"url":"https://roy.marples.name/cgit/dhcpcd.git/commit/?h=dhcpcd-7\u0026id=896ef4a54b0578985e5e1360b141593f1d62837b","tags":["x_refsource_MISC","x_transferred","Mailing List","Patch","Vendor Advisory","fix","report"]},{"url":"http://www.securityfocus.com/bid/108172","tags":["vdb-entry","x_refsource_BID","x_transferred","Broken Link","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-11766"},{"url":"https://github.com/advisories/GHSA-94fh-gx35-hmvh"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-11766","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-11766","tags":["report"]},{"url":"https://roy.marples.name/cgit/dhcpcd.git/commit/?\u0026id=c1ebeaafeb324bac997984abdcee2d4e8b61a8a8","tags":["report"]},{"url":"https://roy.marples.name/cgit/dhcpcd.git/commit/?\u0026id=896ef4a54b0578985e5e1360b141593f1d62837b","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-11766","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-11766","description":"dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.","status":"published","published":"2019-05-05T05:18:14Z","modified":"2024-08-04T23:03:32.799Z","updated_at":"2026-11-02T14:32:22.432545Z"}],"euvd":[{"id":"EUVD-2019-3436","description":"dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.","status":"published","published":"2019-05-05T05:18:14Z","modified":"2024-08-04T23:03:32Z","updated_at":"2026-11-03T02:40:47.960625Z"}],"ghsa":[{"id":"GHSA-94fh-gx35-hmvh","title":"dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the...","description":"dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.","status":"published","published":"2022-05-24T16:45:11Z","modified":"2023-03-07T05:07:55Z","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"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:54:16.644116Z"}],"nvd":[{"id":"CVE-2019-11766","description":"dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.","status":"published","published":"2019-05-05T06:29:00.223Z","modified":"2026-06-17T02:13:35.957Z","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-125"],"updated_at":"2026-11-02T14:05:12.471695Z"}],"osv":[{"id":"CVE-2019-11766","description":"dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.","status":"published","published":"2019-05-05T06:29:00.223Z","modified":"2026-10-24T14:03:34.212268812Z","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":"2026-11-02T15:44:10.718934Z"},{"id":"DEBIAN-CVE-2019-11766","description":"dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.","status":"published","published":"2019-05-05T06:29:00.223Z","modified":"2026-09-21T07:00:37.794913097Z","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":"2026-11-02T15:45:31.467893Z"},{"id":"UBUNTU-CVE-2019-11766","description":"dhcp6.c in dhcpcd before 6.11.7 and 7.x before 7.2.2 has a buffer over-read in the D6_OPTION_PD_EXCLUDE feature.","status":"published","published":"2019-05-05T06:29:00Z","modified":"2025-10-24T04:47:39Z","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"}],"updated_at":"2026-11-02T15:54:19.202697Z"}]}}