CVE catalog

CVE-2026-83603

Severity: High · CVSS 8.4CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Published: Sep 22, 2026, 5:01:56 PM UTC
Updated: Sep 22, 2026, 5:17:26 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.32% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	netdata	bookworm	`1.37.1-2`	not affected
Ubuntu	netdata	pro	`1.29.3-4`	vulnerable
Ubuntu	netdata	pro	`1.31.0-4`	vulnerable
Ubuntu	netdata	pro	`1.33.1-1ubuntu1`	vulnerable
Ubuntu	netdata	pro	`1.33.1-1ubuntu1+esm1`	vulnerable
Ubuntu	netdata	24.04	`1.42.1-1`	vulnerable
Ubuntu	netdata	24.04	`1.43.1-1`	vulnerable
Ubuntu	netdata	24.04	`1.43.2-1`	vulnerable
Ubuntu	netdata	24.04	`1.43.2-1build1`	vulnerable
Ubuntu	netdata	24.04	`1.43.2-1build2`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	netdata	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[netdata]Affected
Details (2)
- 1.37.1-2 · all · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
- 1.37.1-2 · all · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
[netdata-apache2]Affected
Source package: [netdata]
Details (2)
- 1.37.1-2 · all · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
- 1.37.1-2 · all · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
[netdata-core]Affected
Source package: [netdata]
Details (2)
- 1.37.1-2 · amd64 · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
- 1.37.1-2 · arm64 · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
[netdata-plugins-bash]Affected
Source package: [netdata]
Details (2)
- 1.37.1-2 · all · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
- 1.37.1-2 · all · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
[netdata-plugins-python]Affected
Source package: [netdata]
Details (2)
- 1.37.1-2 · all · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
- 1.37.1-2 · all · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
[netdata-web]Affected
Source package: [netdata]
Details (2)
- 1.37.1-2 · all · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12
- 1.37.1-2 · all · bookworm
  Affected
  nvd · netdata · debian · bookworm; nvd · netdata · debian · 12

Observed: Oct 23, 2026, 8:36:13 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]