Is CVE-2018-9276 in the CISA KEV catalog?

Yes. CVE-2018-9276 is on the CISA Known Exploited Vulnerabilities list, added 2025-02-04.

What is the CVSS severity of CVE-2018-9276?

CVE-2018-9276 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2018-9276?

CVE-2018-9276 has an EPSS score of 87.17% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-9276?

Upgrade PRTG Desktop to 21.2.68 or later.

CVE & CISA-KEV Catalog

CVE-2018-9276

HIGHCISA KEVEPSS 100th pctl

7.2

CVSS v3

NVD

Description

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.

CWE-78OS Command Injection

How to fix

Remediation Available

PRTG DesktopWindows application

Affected:19.3.52 21.2.68Fixed in:21.2.68Paessler AG

Affected:18.2.39Fixed in:18.2.39Paessler AG

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

87.17%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Paessler PRTG Network Monitor OS Command Injection Vulnerability

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.

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Remediation due: 2025-02-25

References

Exploit3

Third-Party Advisory1

securityfocus.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-78 (OS Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2014-6271	Critical	9.8	100%	KEV	Fix
CVE-2019-16920	Critical	9.8	100%	KEV	-
CVE-2022-44877	Critical	9.8	100%	KEV	Fix
CVE-2020-8515	Critical	9.8	100%	KEV	-
CVE-2020-9054	Critical	9.8	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-06.