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CVE-2018-9276: Paessler PRTG Network Monitor OS Command Injection Vulnerability

criticalknown exploitedpublic exploitCVE-2018-9276
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Paessler PRTG Network Monitor contains an OS command injection vulnerability that allows an attacker with administrative privileges to execute commands via the PRTG System Administrator web console.

CSIRTS triage

vendor: Paesslerproduct: PRTG Network MonitorCode injection
What
The vulnerability allows an attacker with administrative privileges to execute commands via the web console.
Who is affected
Administrators of PRTG Network Monitor.
Urgency
Remediation is critical due to active exploitation and severity.
Action
Apply the latest security patch for PRTG Network Monitor.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2025-02-04
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2018-9276

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2018-9276coverage & exploitation statusNVD · CVE.org

Recent advisories for Paessler PRTG Network

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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