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CVE-2018-19410

Paessler PRTG Network Monitor Local File Inclusion

9.8 CRITICALActively exploited (CISA KEV)EPSS 97.9%
  1. Published21 Nov 2018
  2. Added to CISA KEV4 Feb 2025
  3. Remediation due25 Feb 2025
Actively exploited (CISA KEV)

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).

Added to KEV: 4 Feb 2025Federal remediation due: 25 Feb 2025

Description

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).

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Paessler Prtg Network Monitor< 18.2.40.1683

Remediation

Fixed in
Paessler Prtg Network Monitor≥ 18.2.40.1683

References

Frequently asked

Is CVE-2018-19410 being actively exploited?

Yes. CVE-2018-19410 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 4 Feb 2025.

How severe is CVE-2018-19410?

CVE-2018-19410 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 97.9% probability of exploitation.

Which products are affected by CVE-2018-19410?

Affected products include Paessler Prtg Network Monitor.

How do I fix CVE-2018-19410?

Upgrade affected software to a fixed version, for example Paessler Prtg Network Monitor 18.2.40.1683 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2018-19410 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.