{"id":"CVE-2026-83603","aliases":["DEBIAN-CVE-2026-83603","EUVD-2026-84564","GHSA-qwh9-pq27-993w","UBUNTU-CVE-2026-83603"],"status":"published","title":"Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE","description":"Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.","severity":{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0032,"percentile":0.25348,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-502","CWE-73"],"published":"2026-09-22T17:01:56Z","modified":"2026-10-28T11:18:46Z","exploits":[{"source":"pocgithub","id":"OhWelp/CVE-2026-83603-LPE-PoC","title":"OhWelp/CVE-2026-83603-LPE-PoC","date":"2026-09-02","url":"https://github.com/OhWelp/CVE-2026-83603-LPE-PoC"}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"netdata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.37.1-2","1.38.0-1","1.38.1-1","1.39.0-1","1.39.1-1","1.39.1-2","1.40.0-1","1.40.0-2","1.40.1-1","1.41.0-1","1.42.0-1","1.42.1-1","1.42.2-1","1.42.3-1","1.42.4-1","1.43.0-1","1.43.1-1","1.43.2-1","1.44.3-1","1.44.3-2","1.46.3-1","1.46.3-2","1.47.0-1","1.47.1-1","1.47.2-1","1.47.5-1","2.0.3+dfsg-1","2.0.3+dfsg-2","2.0.3+dfsg-3","2.0.3+dfsg-4","2.0.3+dfsg-5"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"netdata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.0+dfsg-1","1.8.0+dfsg-1","1.9.0+dfsg-1","1.9.0+dfsg-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"netdata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.16.1-2","1.19.0-3ubuntu1","1.19.0-3ubuntu1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"netdata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.29.3-4","1.31.0-4","1.33.1-1ubuntu1","1.33.1-1ubuntu1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"netdata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.42.1-1","1.43.1-1","1.43.2-1","1.43.2-1build1","1.43.2-1build2"]}],"products":[{"vendor":"netdata","product":"netdata"}],"references":[{"url":"https://github.com/netdata/netdata/security/advisories/GHSA-qwh9-pq27-993w","tags":["x_refsource_CONFIRM","advisory","report"]},{"url":"https://github.com/netdata/netdata/pull/22745","tags":["x_refsource_MISC","fix","report"]},{"url":"https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060","tags":["x_refsource_MISC","fix","report"]},{"url":"https://github.com/netdata/netdata/releases/tag/v2.10.4","tags":["x_refsource_MISC","web","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83603.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83603","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-83603","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-83603","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-83603","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-83603","title":"Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE","description":"Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.","status":"published","published":"2026-09-22T17:01:56.465Z","modified":"2026-09-22T17:43:23.328Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-73","CWE-502"],"updated_at":"2026-11-02T13:45:02.910572Z"}],"euvd":[{"id":"EUVD-2026-84564","description":"Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.","status":"published","published":"2026-09-22T17:01:56Z","modified":"2026-09-22T17:43:23Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T17:28:02.149692Z"}],"nvd":[{"id":"CVE-2026-83603","description":"Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.","status":"published","published":"2026-09-22T17:17:26.55Z","modified":"2026-09-23T18:28:25.093Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-73","CWE-502"],"updated_at":"2026-11-02T14:12:50.368368Z"}],"osv":[{"id":"CVE-2026-83603","title":"Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE","description":"Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.","status":"published","published":"2026-09-22T17:01:56.465Z","modified":"2026-10-28T11:18:46.518840668Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-502","CWE-73"],"updated_at":"2026-11-02T15:45:18.482949Z"},{"id":"DEBIAN-CVE-2026-83603","description":"Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.","status":"published","published":"2026-09-22T17:17:26.55Z","modified":"2026-09-24T08:47:32.04272803Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:46:04.577397Z"},{"id":"UBUNTU-CVE-2026-83603","description":"Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.","status":"published","published":"2026-09-22T17:17:00Z","modified":"2026-09-24T02:01:05.110184758Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T16:57:22.213888Z"}]}}