CVE-2018-19410

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-02-04), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 86%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
9.8
EG Score
9.8(high)
EPSS
99.7%
KEV
⚠ Exploited

Published

November 21, 2018

Last Modified

November 7, 2025

Advisory Details (1)

Auto-updated Jun 1, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-19410

Data Freshness Timeline

(refreshed 94× in last 7d / 421× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 525 total refreshes for this CVE.

  1. 2026-07-07 12:39 UTCEG score recompute
  2. 2026-07-07 12:38 UTCGHSA enrichment
  3. 2026-07-07 08:57 UTCEG score recompute
  4. 2026-07-07 08:57 UTCGHSA enrichment
  5. 2026-07-07 05:15 UTCEG score recompute
  6. 2026-07-07 05:15 UTCGHSA enrichment
  7. 2026-07-07 01:34 UTCEG score recompute
  8. 2026-07-07 01:34 UTCGHSA enrichment
  9. 2026-07-06 21:53 UTCEG score recompute
  10. 2026-07-06 21:52 UTCGHSA enrichment
  11. 2026-07-06 18:10 UTCEG score recompute
  12. 2026-07-06 18:10 UTCGHSA enrichment
  13. 2026-07-06 14:29 UTCEG score recompute
  14. 2026-07-06 14:29 UTCGHSA enrichment
  15. 2026-07-06 10:48 UTCEG score recompute
  16. 2026-07-06 10:48 UTCGHSA enrichment
  17. 2026-07-06 07:05 UTCEG score recompute
  18. 2026-07-06 07:04 UTCGHSA enrichment
  19. 2026-07-06 03:23 UTCEG score recompute
  20. 2026-07-06 03:22 UTCGHSA enrichment
  21. 2026-07-05 23:40 UTCEG score recompute
  22. 2026-07-05 23:40 UTCGHSA enrichment
  23. 2026-07-05 19:59 UTCEG score recompute
  24. 2026-07-05 19:59 UTCGHSA enrichment
  25. 2026-07-05 16:18 UTCEG score recompute
Show 75 more
  1. 2026-07-05 16:17 UTCGHSA enrichment
  2. 2026-07-05 12:35 UTCEG score recompute
  3. 2026-07-05 12:35 UTCGHSA enrichment
  4. 2026-07-05 08:54 UTCEG score recompute
  5. 2026-07-05 08:54 UTCGHSA enrichment
  6. 2026-07-05 05:13 UTCEG score recompute
  7. 2026-07-05 05:13 UTCGHSA enrichment
  8. 2026-07-05 01:31 UTCEG score recompute
  9. 2026-07-05 01:30 UTCGHSA enrichment
  10. 2026-07-04 21:49 UTCEG score recompute
  11. 2026-07-04 21:49 UTCGHSA enrichment
  12. 2026-07-04 18:08 UTCEG score recompute
  13. 2026-07-04 18:07 UTCGHSA enrichment
  14. 2026-07-04 14:24 UTCEG score recompute
  15. 2026-07-04 14:24 UTCGHSA enrichment
  16. 2026-07-04 10:42 UTCEG score recompute
  17. 2026-07-04 10:42 UTCGHSA enrichment
  18. 2026-07-04 06:57 UTCEG score recompute
  19. 2026-07-04 06:57 UTCGHSA enrichment
  20. 2026-07-04 03:14 UTCEG score recompute
  21. 2026-07-04 03:14 UTCGHSA enrichment
  22. 2026-07-03 23:32 UTCEG score recompute
  23. 2026-07-03 23:32 UTCGHSA enrichment
  24. 2026-07-03 19:51 UTCEG score recompute
  25. 2026-07-03 19:51 UTCGHSA enrichment
  26. 2026-07-03 16:11 UTCEG score recompute
  27. 2026-07-03 16:10 UTCGHSA enrichment
  28. 2026-07-03 12:29 UTCEG score recompute
  29. 2026-07-03 12:29 UTCGHSA enrichment
  30. 2026-07-03 08:46 UTCEG score recompute
  31. 2026-07-03 08:46 UTCGHSA enrichment
  32. 2026-07-03 05:05 UTCEG score recompute
  33. 2026-07-03 05:05 UTCGHSA enrichment
  34. 2026-07-03 01:22 UTCEG score recompute
  35. 2026-07-03 01:22 UTCGHSA enrichment
  36. 2026-07-02 21:41 UTCEG score recompute
  37. 2026-07-02 21:41 UTCGHSA enrichment
  38. 2026-07-02 18:00 UTCEG score recompute
  39. 2026-07-02 18:00 UTCGHSA enrichment
  40. 2026-07-02 16:54 UTCEPSS rescore
  41. 2026-07-02 14:20 UTCEG score recompute
  42. 2026-07-02 14:20 UTCGHSA enrichment
  43. 2026-07-02 10:38 UTCEG score recompute
  44. 2026-07-02 10:38 UTCGHSA enrichment
  45. 2026-07-02 06:54 UTCEG score recompute
  46. 2026-07-02 06:54 UTCGHSA enrichment
  47. 2026-07-02 03:13 UTCEG score recompute
  48. 2026-07-02 03:13 UTCGHSA enrichment
  49. 2026-07-01 23:32 UTCEG score recompute
  50. 2026-07-01 23:32 UTCGHSA enrichment
  51. 2026-07-01 19:51 UTCEG score recompute
  52. 2026-07-01 19:50 UTCGHSA enrichment
  53. 2026-07-01 19:16 UTCCISA KEV update
  54. 2026-07-01 16:09 UTCEG score recompute
  55. 2026-07-01 16:09 UTCGHSA enrichment
  56. 2026-07-01 12:28 UTCEG score recompute
  57. 2026-07-01 12:28 UTCGHSA enrichment
  58. 2026-07-01 08:47 UTCEG score recompute
  59. 2026-07-01 08:47 UTCGHSA enrichment
  60. 2026-07-01 05:06 UTCEG score recompute
  61. 2026-07-01 05:06 UTCGHSA enrichment
  62. 2026-07-01 01:25 UTCEG score recompute
  63. 2026-07-01 01:25 UTCGHSA enrichment
  64. 2026-06-30 23:20 UTCEPSS rescore
  65. 2026-06-30 23:19 UTCEPSS rescore
  66. 2026-06-30 21:44 UTCEG score recompute
  67. 2026-06-30 21:44 UTCGHSA enrichment
  68. 2026-06-30 18:03 UTCEG score recompute
  69. 2026-06-30 18:03 UTCGHSA enrichment
  70. 2026-06-30 14:22 UTCEG score recompute
  71. 2026-06-30 14:21 UTCGHSA enrichment
  72. 2026-06-30 10:39 UTCEG score recompute
  73. 2026-06-30 10:39 UTCGHSA enrichment
  74. 2026-06-30 06:57 UTCEG score recompute
  75. 2026-06-30 06:57 UTCGHSA enrichment

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoChimash/CVE-2018-19410-POC
    First seen Jan 25, 2024

    Proof of concept for the vulnerability CVE-2018-19410

    Open source ↗
  • Nucleihttp/cves/2018/CVE-2018-19410.yaml
    First seen Jan 1, 2018

    PRTG Network Monitor - Local File Inclusion

    Open source ↗

Frequently asked(6)

What is CVE-2018-19410?
CVE-2018-19410 is a critical vulnerability published on November 21, 2018. 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…
When was CVE-2018-19410 disclosed?
CVE-2018-19410 was first published in the National Vulnerability Database on November 21, 2018, with the most recent update on November 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-19410 actively exploited?
Yes. CISA added CVE-2018-19410 to the Known Exploited Vulnerabilities catalog on February 4, 2025, affecting Paessler PRTG Network Monitor. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2018-19410?
CVE-2018-19410 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2018-19410?
CVE-2018-19410 affects Paessler PRTG Network Monitor. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2018-19410?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-19410, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2018-19410

Explore →

Is Your Infrastructure Affected by CVE-2018-19410?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs