CVE-2026-83603

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 v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 5.8

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

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

Configurations

No configuration.

History

22 Sep 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-22 17:17

Updated : 2026-09-23 18:28

NVD link : CVE-2026-83603

Mitre link : CVE-2026-83603

CVE.ORG link : CVE-2026-83603

JSON object : View

Products Affected

No product.

CWE

CWE-73

External Control of File Name or Path

CWE-502

Deserialization of Untrusted Data

{"id": "CVE-2026-83603", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-83603", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-22T17:35:38.430711Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.8, "exploitabilityScore": 2.0}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "netdata", "product": "netdata", "versions": [{"status": "affected", "version": "< 2.10.4"}]}]}], "published": "2026-09-22T17:17:26.550", "references": [{"url": "https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060", "source": "security-advisories@github.com"}, {"url": "https://github.com/netdata/netdata/pull/22745", "source": "security-advisories@github.com"}, {"url": "https://github.com/netdata/netdata/releases/tag/v2.10.4", "source": "security-advisories@github.com"}, {"url": "https://github.com/netdata/netdata/security/advisories/GHSA-qwh9-pq27-993w", "source": "security-advisories@github.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-73"}, {"lang": "en", "value": "CWE-502"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-23T18:28:25.093", "sourceIdentifier": "security-advisories@github.com"}