{"id":"CVE-2026-44050","aliases":["ALPINE-CVE-2026-44050","DEBIAN-CVE-2026-44050","EUVD-2026-31229","GHSA-8f3j-jffj-vg2m","UBUNTU-CVE-2026-44050","USN-8395-1"],"status":"published","title":"Heap buffer overflow in CNID daemon comm_rcv()","description":"A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code with escalated privileges or cause a denial of service.","severity":{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00418,"percentile":0.36488,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-122"],"published":"2026-05-21T07:34:21Z","modified":"2026-11-03T06:33:03Z","fixes":[{"ecosystem":"Alpine:v3.24","package":"netatalk","fixed_in":["4.4.3-r0"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"netatalk","fixed_in":["4.2.3~ds-1+deb13u2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"netatalk","fixed_in":["4.4.3~ds-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"netatalk","fixed_in":["2.2.2-1ubuntu2.2+esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"netatalk","fixed_in":["2.2.5-1ubuntu0.2+esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"netatalk","fixed_in":["2.2.6-1ubuntu0.18.04.2+esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"netatalk","fixed_in":["3.1.12~ds-4ubuntu0.20.04.4+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:22.04:LTS","package":"netatalk","fixed_in":["3.1.12~ds-9ubuntu0.22.04.4+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:24.04:LTS","package":"netatalk","fixed_in":["3.1.18~ds-1ubuntu0.1~esm2"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"netatalk","fixed_in":["4.2.3~ds-2.1ubuntu0.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.24","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.3-r0"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.3~ds-1+deb13u2"}]}],"versions":["4.2.3~ds-1","4.2.3~ds-1+deb13u1"]},{"source":"osv","ecosystem":"Debian:14","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.3~ds-1"}]}],"versions":["4.2.3~ds-1","4.2.3~ds-2","4.2.3~ds-2.1","4.4.1~ds-1","4.4.2~ds-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.2-1ubuntu2.2+esm3"}]}],"versions":["2.2.2-1ubuntu1","2.2.2-1ubuntu2","2.2.2-1ubuntu2.2","2.2.2-1ubuntu2.2+esm1","2.2.2-1ubuntu2.2+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.5-1ubuntu0.2+esm3"}]}],"versions":["2.2.5-1","2.2.5-1ubuntu0.2","2.2.5-1ubuntu0.2+esm1","2.2.5-1ubuntu0.2+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.6-1ubuntu0.18.04.2+esm3"}]}],"versions":["2.2.6-1","2.2.6-1ubuntu0.18.04.2","2.2.6-1ubuntu0.18.04.2+esm1","2.2.6-1ubuntu0.18.04.2+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.12~ds-4ubuntu0.20.04.4+esm1"}]}],"versions":["3.1.12~ds-3","3.1.12~ds-4","3.1.12~ds-4ubuntu0.20.04.1","3.1.12~ds-4ubuntu0.20.04.3","3.1.12~ds-4ubuntu0.20.04.3+esm1","3.1.12~ds-4ubuntu0.20.04.4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.12~ds-9ubuntu0.22.04.4+esm1"}]}],"versions":["3.1.12~ds-9","3.1.12~ds-9build1","3.1.12~ds-9ubuntu0.22.04.1","3.1.12~ds-9ubuntu0.22.04.3","3.1.12~ds-9ubuntu0.22.04.3+esm1","3.1.12~ds-9ubuntu0.22.04.4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.18~ds-1ubuntu0.1~esm2"}]}],"versions":["3.1.15~ds-1ubuntu1","3.1.18~ds-1","3.1.18~ds-1build2","3.1.18~ds-1build4","3.1.18~ds-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.2~ds-4","4.2.1~ds-1","4.2.3~ds-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.3~ds-2.1ubuntu0.1"}]}],"versions":["4.2.3~ds-1","4.2.3~ds-2","4.2.3~ds-2.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.2-1ubuntu2.2+esm3"}]}],"versions":["2.2.2-1ubuntu1","2.2.2-1ubuntu2","2.2.2-1ubuntu2.2","2.2.2-1ubuntu2.2+esm1","2.2.2-1ubuntu2.2+esm2"],"bundled":10},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.5-1ubuntu0.2+esm3"}]}],"versions":["2.2.5-1","2.2.5-1ubuntu0.2","2.2.5-1ubuntu0.2+esm1","2.2.5-1ubuntu0.2+esm2"],"bundled":10},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"netatalk","ranges":[{"type":"ECOSYSTEM","events"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buffer overflow in CNID daemon comm_rcv()","description":"A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code with escalated privileges or cause a denial of service.","status":"published","published":"2026-05-21T07:34:21.459Z","modified":"2026-05-22T03:56:03.551Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T13:42:49.132798Z"}],"euvd":[{"id":"EUVD-2026-31229","description":"A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code with escalated privileges or cause a denial of service.","status":"published","published":"2026-05-21T07:34:21Z","modified":"2026-05-22T03:56:03Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:21:12.869457Z"}],"ghsa":[{"id":"GHSA-8f3j-jffj-vg2m","title":"A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4...","description":"A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code with escalated privileges or cause a denial of service.","status":"published","published":"2026-05-21T09:32:08Z","modified":"2026-05-21T09:32:16Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:08:14.55753Z"}],"nvd":[{"id":"CVE-2026-44050","description":"A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code with escalated privileges or cause a denial of service.","status":"published","published":"2026-05-21T08:16:20.58Z","modified":"2026-07-23T15:10:00.137Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:12:19.752984Z"}],"osv":[{"id":"ALPINE-CVE-2026-44050","description":"A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code with escalated privileges or cause a denial of service.","status":"published","published":"2026-05-21T08:16:20.58Z","modified":"2026-11-03T06:33:03.110185808Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T07:15:53.944853Z"},{"id":"DEBIAN-CVE-2026-44050","description":"A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code with escalated privileges or cause a denial of service.","status":"published","published":"2026-05-21T08:16:20.58Z","modified":"2026-10-01T03:03:14.809327908Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:55.669088Z"},{"id":"UBUNTU-CVE-2026-44050","description":"A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code with escalated privileges or cause a denial of service.","status":"published","published":"2026-05-21T08:16:00Z","modified":"2026-06-09T13:00:20.004723212Z","cvss":[{"version":"3.1","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:56:22.075798Z"},{"id":"USN-8395-1","title":"netatalk vulnerabilities","description":"Arjun Basnet discovered that Netatalk incorrectly sanitized user input in\nits MySQL CNID backend. A remote authenticated attacker could possibly\nuse this issue to conduct SQL injection attacks. (CVE-2026-44047)\n\nArjun Basnet discovered that Netatalk incorrectly handled UCS-2 character\nset conversion. A remote authenticated attacker could possibly use this\nissue to cause a denial of service or execute arbitrary code.\n(CVE-2026-44048)\n\nArjun Basnet discovered that Netatalk improperly handled null termination\nduring character set conversion. A remote authenticated attacker could\npossibly use this issue to cause a denial of service or execute arbitrary\ncode. (CVE-2026-44049)\n\nArjun Basnet discovered that the Netatalk CNID daemon improperly handled\nrequest-supplied name lengths. A local attacker could possibly use this\nissue to cause a denial of service or execute arbitrary code with\nescalated privileges. (CVE-2026-44050)\n\nArjun Basnet discovered that Netatalk improperly resolved symbolic links.\nA remote authenticated attacker could possibly use this issue to read or\noverwrite arbitrary files on the system. (CVE-2026-44051)\n\nArjun Basnet discovered that Netatalk incorrectly handled logging when\nperforming LDAP simple-bind operations. A local attacker could possibly\nuse this issue to obtain sensitive information. (CVE-2026-44052)\n\nArjun Basnet discovered that Netatalk contained an operator precedence\nlogic error when processing input. A remote authenticated attacker could\npossibly use this issue to cause a denial of service or execute arbitrary\ncode. (CVE-2026-44055)\n\nArjun Basnet discovered that Netatalk incorrectly handled DSI write\nrequests. A remote unauthenticated attacker could possibly use this\nissue to cause a denial of service. (CVE-2026-44060)\n\nArjun Basnet discovered that Netatalk incorrectly validated output\nlengths when converting character sets. A remote authenticated attacker\ncould possibly use this issue to cause a denial of service or execute\narbitrary code. (CVE-2026-44062)\n\nArjun Basnet discovered that Netatalk incorrectly handled length\nvalidation when parsing certain session identifiers. An attacker could\npossibly use this issue to cause a denial of service. (CVE-2026-44064)","status":"published","published":"2026-06-08T11:33:17Z","modified":"2026-06-09T13:14:50.283688828Z","updated_at":"2026-11-02T16:58:25.103481Z"}]}}