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CVE-2018-19410 (GCVE-0-2018-19410)

Vulnerability from cvelistv5 – Published: 2018-11-21 16:00 – Updated: 2025-10-21 23:45
VLAI CISA Shadowserver Previdian
Summary
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).
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-04 15:49 UTC
CWE
Assigner
References
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 150c2734-a97e-4215-8aa6-8ca18b33b5b6

Vulnerability ID: CVE-2018-19410

Status: Confirmed

Status Updated: 2025-02-04 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-02-04
Asserted: 2025-02-04
Scope
Notes: KEV entry: Paessler PRTG Network Monitor Local File Inclusion Vulnerability | Affected: Paessler / PRTG Network Monitor | Description: 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). | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2025-02-25 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.paessler.com/prtg/history/prtg-18#18.2.41.1652 ; https://nvd.nist.gov/vuln/detail/CVE-2018-19410
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes
Feed CISA Known Exploited Vulnerabilities Catalog
Product PRTG Network Monitor
Due Date 2025-02-25
Date Added 2025-02-04
Vendorproject Paessler
Vulnerabilityname Paessler PRTG Network Monitor Local File Inclusion Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:26 UTC | Updated: 2026-02-06 07:17 UTC
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1b3032aa-e679-459e-8079-242c80bb508b

Vulnerability ID: CVE-2018-19410

Status: Confirmed

Status Updated: 2026-07-20 00:00 UTC

Exploited: Yes

Characteristics
Severity: 0.0
Timestamps
First Seen: 2025-11-26
Asserted: 2025-11-26
Last Seen: 2026-07-20
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Paessler / PRTG Network Monitor | Class: network-monitoring | Severity: None (CVSS 0) | IoT: no | In CISA KEV: yes | Honeypot connections on 2026-07-20: 5
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 2
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class network-monitoring
7D Avg 1
Vendor Paessler
30D Avg 1
90D Avg 2
Product PRTG Network Monitor
Cisa Kev yes
Connections 5
Observation Date 2026-07-20
Vulnerability Class CVSS
Vulnerability Score 0
Vulnerability Severity None
References
Created: 2026-06-30 09:22 UTC | Updated: 2026-07-22 01:00 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 9e676cc7-29e3-4d70-8c17-6716d32772cb

Vulnerability ID: CVE-2018-19410

Status: Confirmed

Status Updated: 2025-02-04 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-02-04
Asserted: 2025-02-04
Scope
Notes: KEVIntel entry: PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including... | Affected: Paessler / PRTG Network Monitor | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including...
Vendor Paessler
Product PRTG Network Monitor
Added Date 2025-02-04T00:00:00.000Z
Cvss Score 9.8
Epss Score None
Cvss Severity CRITICAL
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:06 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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                  "availabilityImpact": "HIGH",
                  "baseScore": 9.8,
                  "baseSeverity": "CRITICAL",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
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                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2018-19410",
                    "options": [
                      {
                        "Exploitation": "active"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
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                    ],
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              {
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                  "content": {
                    "dateAdded": "2025-02-04",
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                    "description": "CWE-noinfo Not enough information",
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            "providerMetadata": {
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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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                "time": "2025-02-04T00:00:00.000Z",
                "value": "CVE-2018-19410 added to CISA KEV"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
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            {
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                {
                  "status": "affected",
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          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "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 \u0027include\u0027 directive in /public/login.htm and perform a Local File Inclusion attack, by including /api/addusers and executing it. By providing the \u0027id\u0027 and \u0027users\u0027 parameters, an unauthenticated attacker can create a user with read-write privileges (including administrator)."
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          "problemTypes": [
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              "url": "https://www.ptsecurity.com/ww-en/analytics/threatscape/pt-2018-24/"
            }
          ],
          "x_legacyV4Record": {
            "CVE_data_meta": {
              "ASSIGNER": "cve@mitre.org",
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        "dateReserved": "2018-11-21T00:00:00.000Z",
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}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.