CVE-2026-83603
Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE
HIGH 8.4EPSS 0.3%
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.
- Affected
- netdata
- CVSS v3.1 GITHUB
- 8.4 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N - EPSS
- 0.32% chance of exploitation in the next 30 days, 24th percentile
- Published
- 2026-09-22
Proof-of-concept exploits (1)
- OhWelp/CVE-2026-83603-LPE-PoC0★ · 2026-10-03