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
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 87%CVSS: 9.8Exploit: cisa kev · ssvc active · epss top5pct · epss high · public exploitExposed: 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)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
87%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

November 21, 2018

Last Modified

November 7, 2025

Advisory Details (1)

Auto-updated Aug 20, 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 58× in last 7d / 215× 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 624 total refreshes for this CVE.

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

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