High 8.4Published Sep 22, 2026

CVE-2026-83603Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE

Updated under an hour ago (2026-10-19 09:50 UTC)

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It affects netdata. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Weakness (CWE): CWE-73, CWE-502
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Sep 22, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

netdata netdata netdata:netdata (from the name)	before 2.10.4	CNA record

References

https://github.com/netdata/netdata/security/advisories/GHSA-qwh9-pq27-993wx-refsource-confirm
https://github.com/netdata/netdata/pull/22745x-refsource-misc
https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060x-refsource-misc
https://github.com/netdata/netdata/releases/tag/v2.10.4x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.