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CVE-2018-9276

High CVSS 7.2 Known exploited

Published 2018-07-02 · last changed 2026-06-17 · added to CISA KEV 2025-02-04

This one is being exploited in the wild.

CISA added CVE-2018-9276 to the Known Exploited Vulnerabilities catalog on 2025-02-04. Federal agencies are required to remediate it on a deadline. If you have affected machines, this is the class of finding that moves ahead of the rest of the queue.

The fix

We hold no Microsoft remediation data for CVE-2018-9276, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

An issue was discovered in PRTG Network Monitor before 18.2.39. An attacker who has access to the PRTG System Administrator web console with administrative privileges can exploit an OS command injection vulnerability (both on the server and on devices) by sending malformed parameters in sensor or notification management scenarios.

Sources

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