Prtg Network MonitorApplication · Paessler

CVE-2017-15651

MEDIUM · 6.7 CVSS v3.0 Published 2017-10-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
PRTG Network Monitor 17.3.33.2830 allows remote authenticated administrators to execute arbitrary code by uploading a .exe file and then proceeding in spite of the error message.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

PRTG Network Monitor 17.3.33.2830 contains a file upload vulnerability allowing remote authenticated administrators to achieve arbitrary code execution. The application displays an error message when attempting to upload .exe files, but this error can be bypassed—the upload proceeds anyway, allowing execution of malicious code.

MitigationUpgrade to a patched version of PRTG Network Monitor. In the meantime, restrict administrative access to trusted users only and consider network segmentation to limit exposure.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Prtg Network MonitorApplication
Affected:= 17.3.33.2830

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify PRTG Network Monitor version
    Access the PRTG web interface and check the version information typically displayed in the footer or under 'Setup' > 'System Administration' > 'About PRTG', or check the installed software via Windows Programs and Features
    Affected if The installed version is 17.3.33.2830 exactly
  2. Confirm web interface accessibility
    Verify that the PRTG web interface (HTTP/HTTPS on port 8080 or 443 by default) is accessible from the network
    Affected if The web interface is reachable and responds to requests
  3. Verify administrative authentication status
    Check if there are user accounts with administrative privileges configured in PRTG under 'Setup' > 'Account Settings' > 'User Accounts'
    Affected if Administrative user accounts exist and can log in to the PRTG web interface
  4. Check for uploaded executable files
    Inspect the '/wwwrootsorcustom/' directory (or custom upload directories) on the PRTG server for unexpected .exe, .asp, or .php files that were not part of standard installation
    Affected if Unexpected executable or script files are found in the web directories indicating potential exploitation

If the installed PRTG version is exactly 17.3.33.2830 and the web interface with administrative accounts is accessible, the environment is affected by this vulnerability.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to a patched version of PRTG Network Monitor. In the meantime, restrict administrative access to trusted users only and consider network segmentation to limit exposure.

Fix this in Prtg Network Monitor Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing5.0 h
  • Review / QA2.0 h
16.0 hours of engineering $2,790
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2017-15651 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2017-15651 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data