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Vulnerabilities

Vulnerability · CVE-2018-19410

Paessler PRTG Network Monitor Local File Inclusion Vulnerability

Published Nov 21, 2018 · catalog updated Jun 16, 2026 · Paessler PRTG Network Monitor

Patch now

CVE-2018-19410 is in the CISA known-exploited catalog, due Feb 25, 2025. Confirm Paessler PRTG Network Monitor against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
97.94%
Remediation
Remediation guidance
Affected products
cpe paessler/prtg network monitor · vendor Paessler PRTG Network Monitor

PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including administrator). A remote unauthenticated user can craft an HTTP request and override attributes of the 'include' directive in /public/login.htm and perform a Local File Inclusion attack, by including /api/addusers and executing it. By providing the 'id' and 'users' parameters, an unauthenticated attacker can create a user with read-write privileges (including administrator).

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe paessler/prtg network monitorversion unspecified
  • vendor Paessler PRTG Network Monitorversion unspecified

How to fix CVE-2018-19410

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2018-19410 is in the CISA known-exploited catalog, due Feb 25, 2025. Confirm Paessler PRTG Network Monitor against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 97.94%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 21, 2018 · Catalog

    Detected

    PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including administrator). A remote unauthenticated user can craft an HTTP request and override attributes of the 'include' directive in /public/login.htm and perform a Local File Inclusion attack, by including /api/addusers and executing it. By providing the 'id' and 'users'

  2. Feb 4, 2025 · CISA KEV

    Known exploited

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

  3. Feb 25, 2025 · CISA KEV

    Remediation due

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

  4. Jun 16, 2026 · Catalog

    Updated

    PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including administrator). A remote unauthenticated user can craft an HTTP request and override attributes of the 'include' directive in /public/login.htm and perform a Local File Inclusion attack, by including /api/addusers and executing it. By providing the 'id' and 'users'

Sources

  • CISA KEVConfirmed exploitationCVE-2018-19410

    Paessler PRTG Network Monitor contains a local file inclusion vulnerability that allows a remote, unauthenticated attacker to create users with read-write privileges (including administrator).

    cisa.gov
  • CVE.orgVulnerability recordCVE-2018-19410

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-19410

    30-day exploitation probability 97.9%

    first.org
  • NIST NVDVulnerability recordCVE-2018-19410

    PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including administrator). A remote unauthenticated user can craft an HTTP request and override attributes of the 'include' directive in /public/login.htm a

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2018-19410

    Paessler PRTG Network Monitor contains a local file inclusion vulnerability that allows a remote, unauthenticated attacker to create users with read-write privileges (including administrator).

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.