CVE-2018-9276
Paessler — Paessler PRTG Network Monitor OS Command Injection Vulnerability
Paessler · CWE-78 — Operating system command injection · in CISA KEV since 2025-02-04
EVRS 81 of 100 Urgent
Patch This Cycle
Rank 565 of 2,960 tracked
Why it scores 81
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.870.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
prtg network monitor: update to 18.2.39 or later | prtg network monitor: update to 21.2.68 or later
Affected versions
- prtg network monitor
< 18.2.39> 19.3.52 < 21.2.68
Remediation
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 7.2 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.870 (99.75th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2025-02-25 · KEV since 2025 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.2 (v3.1), assigned by mitre. | Listed | ENISA EUVD |
Description
NVDAn 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 CISA says to do
Public module
Metasploit lists a public excellent-rank module for this CVE: PRTG Network Monitor Authenticated RCE (windows/http/prtg_authenticated_rce). A module existing is not the same as active exploitation; see metasploit.com.