{"id":"CVE-2026-83603","title":"Netdata is an open source observability tool","summary":"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…","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","cwe":["CWE-73","CWE-502"],"vendor":"netdata","product":"netdata","affected":["netdata < 2.10.4"],"published":"2026-09-22","updated":"2026-09-23","sourceUpdated":"2026-09-23T18:28:25.093","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-83603","references":[{"url":"https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060","label":"security-advisories@github.com"},{"url":"https://github.com/netdata/netdata/pull/22745","label":"security-advisories@github.com"},{"url":"https://github.com/netdata/netdata/releases/tag/v2.10.4","label":"security-advisories@github.com"},{"url":"https://github.com/netdata/netdata/security/advisories/GHSA-qwh9-pq27-993w","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00349,"epssPercentile":0.2864,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-22T17:35:38.430711Z"},"ingestedAt":"2026-09-22T18:08:12.468Z","slug":"CVE-2026-83603","body":"## Overview\n\nNetdata 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}