{"id":"CVE-2026-28372","aliases":["ALPINE-CVE-2026-28372","DEBIAN-CVE-2026-28372","DSA-6144-1","EUVD-2026-9000","GHSA-j682-47rx-fxrp","UBUNTU-CVE-2026-28372","USN-8387-1"],"status":"published","title":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing...","description":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00415,"percentile":0.36084,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-829"],"published":"2026-02-19T00:00:00Z","modified":"2026-11-03T06:33:02Z","exploits":[{"source":"pocgithub","id":"mbanyamer/CVE-2026-28372-GNU-inetutils-telnetd-Privilege-Escalation","title":"mbanyamer/CVE-2026-28372-GNU-inetutils-telnetd-Privilege-Escalation","date":"2026-02-27","url":"https://github.com/mbanyamer/CVE-2026-28372-GNU-inetutils-telnetd-Privilege-Escalation"},{"source":"pocgithub","id":"kalibb/CVE-2026-28372-GNU-inetutils-telnetd-Privilege-Escalation-main","title":"kalibb/CVE-2026-28372-GNU-inetutils-telnetd-Privilege-Escalation-main","date":"2026-02-28","url":"https://github.com/kalibb/CVE-2026-28372-GNU-inetutils-telnetd-Privilege-Escalation-main"},{"source":"pocgithub","id":"Rohitberiwala/CVE-2026-28372-telnetd-Privilege-Escalation","title":"Rohitberiwala/CVE-2026-28372-telnetd-Privilege-Escalation","date":"2026-03-07","url":"https://github.com/Rohitberiwala/CVE-2026-28372-telnetd-Privilege-Escalation"}],"fixes":[{"ecosystem":"Alpine:v3.24","package":"inetutils-telnet","fixed_in":["2.8-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"inetutils","fixed_in":["2:2.4-2+deb12u3"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"inetutils","fixed_in":["2:2.6-3+deb13u2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"inetutils","fixed_in":["2:2.7-3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"inetutils","fixed_in":["2:1.9.2-1ubuntu0.1~esm4"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"inetutils","fixed_in":["2:1.9.4-1ubuntu0.1~esm6"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"inetutils","fixed_in":["2:1.9.4-3ubuntu0.1+esm5"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"inetutils","fixed_in":["2:1.9.4-11ubuntu0.2+esm4"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:22.04:LTS","package":"inetutils","fixed_in":["2:2.2-2ubuntu0.2+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"inetutils","fixed_in":["2:2.5-3ubuntu4.2"],"sources":["osv"]},{"ecosystem":"Ubuntu:25.10","package":"inetutils","fixed_in":["2:2.6-1ubuntu3.2"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"inetutils","fixed_in":["2:2.7-2ubuntu1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.24","package":"inetutils-telnet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.4-2+deb12u3"}]}],"versions":["2:2.4-2","2:2.4-2+deb12u1","2:2.4-2+deb12u2"]},{"source":"osv","ecosystem":"Debian:13","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.6-3+deb13u2"}]}],"versions":["2:2.6-3","2:2.6-3+deb13u1"]},{"source":"osv","ecosystem":"Debian:14","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.7-3"}]}],"versions":["2:2.6-3","2:2.6-4","2:2.7-1","2:2.7-2"]},{"source":"osv","ecosystem":"Debian:13","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.6-3+deb13u2"}]}],"versions":["2:2.6-3","2:2.6-3+deb13u1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.2-1ubuntu0.1~esm4"}]}],"versions":["2:1.9.1.306-0a482-1","2:1.9.1.363-bbc1-1","2:1.9.2-1","2:1.9.2-1ubuntu0.1~esm1","2:1.9.2-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.4-1ubuntu0.1~esm6"}]}],"versions":["2:1.9.4-1","2:1.9.4-1build1","2:1.9.4-1ubuntu0.1~esm1","2:1.9.4-1ubuntu0.1~esm2","2:1.9.4-1ubuntu0.1~esm3","2:1.9.4-1ubuntu0.1~esm5"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.4-3ubuntu0.1+esm5"}]}],"versions":["2:1.9.4-2build1","2:1.9.4-3","2:1.9.4-3ubuntu0.1","2:1.9.4-3ubuntu0.1+esm1","2:1.9.4-3ubuntu0.1+esm2","2:1.9.4-3ubuntu0.1+esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.4-11ubuntu0.2+esm4"}]}],"versions":["2:1.9.4-10build1","2:1.9.4-11","2:1.9.4-11ubuntu0.1","2:1.9.4-11ubuntu0.1+esm1","2:1.9.4-11ubuntu0.2","2:1.9.4-11ubuntu0.2+esm1","2:1.9.4-11ubuntu0.2+esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.2-2ubuntu0.2+esm1"}]}],"versions":["2:2.0-1","2:2.2-2","2:2.2-2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List","Third Party Advisory","web","report"]},{"url":"https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=3953943d8296310485f98963883a798545ab9a6c","tags":["Patch","web","report"]},{"url":"https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00012.html","tags":["Mailing List","Third Party Advisory","web","report"]},{"url":"https://www.openwall.com/lists/oss-security/2026/02/24/1","tags":["Mailing List","Third Party Advisory","web","report"]},{"url":"http://www.openwall.com/lists/oss-security/2026/02/27/3","tags":["Mailing List","Third Party Advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2026/03/06/2","tags":["web"]},{"url":"http://www.openwall.com/lists/oss-security/2026/03/06/3","tags":["web"]},{"url":"http://www.openwall.com/lists/oss-security/2026/03/07/1","tags":["web"]},{"url":"http://www.openwall.com/lists/oss-security/2026/03/07/2","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28372","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-j682-47rx-fxrp"},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-28372","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28372.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-28372","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-28372","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-28372","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8387-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-32746","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-32772","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-28372","description":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.","status":"published","published":"2026-02-27T05:28:17.383Z","modified":"2026-03-07T17:05:13.869Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T14:20:01.969981Z"}],"euvd":[{"id":"EUVD-2026-9000","description":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.","status":"published","published":"2026-02-27T05:28:17Z","modified":"2026-03-07T17:05:13Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:48:07.128863Z"}],"ghsa":[{"id":"GHSA-j682-47rx-fxrp","title":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing...","description":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.","status":"published","published":"2026-02-27T06:31:28Z","modified":"2026-03-07T18:31:32Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T15:06:30.378091Z"}],"nvd":[{"id":"CVE-2026-28372","description":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.","status":"published","published":"2026-02-27T06:18:00.077Z","modified":"2026-06-17T10:28:30.07Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T14:12:07.420927Z"}],"osv":[{"id":"ALPINE-CVE-2026-28372","description":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.","status":"published","published":"2026-02-27T06:18:00.077Z","modified":"2026-11-03T06:33:02.202647087Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T07:15:53.944853Z"},{"id":"CVE-2026-28372","description":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.","status":"published","published":"2026-02-27T05:28:17.383Z","modified":"2026-10-28T02:31:11.23614206Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T15:45:00.180685Z"},{"id":"DEBIAN-CVE-2026-28372","description":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.","status":"published","published":"2026-02-27T06:18:00.077Z","modified":"2026-10-01T03:03:08.131674391Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:53.877573Z"},{"id":"UBUNTU-CVE-2026-28372","description":"telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.","status":"published","published":"2026-02-27T06:18:00Z","modified":"2026-06-08T23:00:12.784818311Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:08.726452Z"},{"id":"DSA-6144-1","title":"inetutils - security update","status":"published","published":"2026-02-19T00:00:00Z","modified":"2026-03-09T02:11:46.013477Z","updated_at":"2026-11-02T15:46:18.296714Z"},{"id":"USN-8387-1","title":"inetutils vulnerabilities","description":"It was discovered that the Inetutils telnet daemon incorrectly handled\nthe CREDENTIALS_DIRECTORY environment variable. An attacker could possibly\nuse this issue to escalate privileges. (CVE-2026-28372)\n\nIt was discovered that the Inetutils telnet daemon did not properly\nvalidate buffer bounds when processing LINEMODE SLC suboptions. An attacker\ncould possibly use this issue to cause a denial of service or execute\narbitrary code. (CVE-2026-32746)\n\nIt was discovered that the Inetutils telnet client incorrectly handled the\nNEW_ENVIRON SEND USERVAR option. An attacker could possibly use this issue\nto read arbitrary environment variables. (CVE-2026-32772)","status":"published","published":"2026-06-04T23:16:19Z","modified":"2026-06-08T23:14:21.135553506Z","updated_at":"2026-11-02T16:58:25.103481Z"}]}}