CVE-2018-9276

Name: CVE-2018-9276
Creator: NVD / NIST
Published: 2018-07-02T16:29:00.6+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10Actively ExploitedEPSS 87.17%

Last modified Jun 17, 2026

CVE-2018-9276 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 87.17% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

87.17%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Feb 25, 2025.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Paessler	Prtg Network Monitor	< 18.2.39
Paessler	Prtg Network Monitor	> 19.3.52, < 21.2.68

References

http://packetstormsecurity.com/files/148334/PRTG-Command-Injection.htmlExploit, Mitigation, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/161183/PRTG-Network-Monitor-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/542103/100/0/threadedBroken Link, Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/46527/Exploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/148334/PRTG-Command-Injection.htmlExploit, Mitigation, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/161183/PRTG-Network-Monitor-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/542103/100/0/threadedBroken Link, Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/46527/Exploit, Third Party Advisory, VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-9276US Government Resource

Timeline

Published: Jul 2, 2018
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-9276?

How severe is CVE-2018-9276?

CVE-2018-9276 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 87.17% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2018-9276?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST