CVE-2026-83603

HIGH 8.4

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

CVSS Score

8.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-73 CWE-502
Vendor	netdata
Product	netdata
Published	Sep 22, 2026
Last Updated	Sep 22, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

netdata / netdata

< 2.10.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/netdata/netdata/security/advisories/GHSA-qwh9-pq27-993w github.com: https://github.com/netdata/netdata/pull/22745 github.com: https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060 github.com: https://github.com/netdata/netdata/releases/tag/v2.10.4