vciy

CVE-2018-19410

INDEX BUILT · 2026-09-20

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PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including administrator)

CVE-2018-194103 of 4 sources documented this
75

rank 75 = 40 + 25 + 2 + 2 + 6

rank@v1 · act now

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.97939 · CISA KEV listed  ·  without this subject the record ranks 35

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from NVD  ·  without this subject the record ranks 50

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2026-08-28  ·  without this subject the record ranks 73

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 73

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 69

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.89Mover the next 30 days, if this record is yours
Movement+$567,000on 2026-08-28, the last material move, 7 days before this reading
Basisassumeda published average, not your estate

$4.89M = $4.99M incident cost x 1 exposure x 0.97939 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.97939EPSSKEV · LISTED
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationin the wild · KEVreceipt
Defenseunaffected versions publishedreceipt
Movementthreshold crossedreceipt
RISING10Risen from 0.00278 to 0.97939 across 32 observations. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · no privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classNo CWE mapping in held sources.
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

First unaffected version, by branchprtg network monitor 18.2.40.1683receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.
CISA remediation statusoverdue since 2025-02-25receipt
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.receipt
Published to CISA KEV2267 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2025-02-04.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 1 public repository2024-01-25receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2025-02-04receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.97939 · top 0.09% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymitrereceipt
Recorded changes46 · last 14 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesPaessler prtg network monitorreceipt
Published rangespaessler prtg network monitor < 18.2.40.1683receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

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). receipt

NVD's analysis a second authority

severity
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
affected versions
paessler prtg network monitor < 18.2.40.1683
also scored by
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

check it yourself ptsecurity.com receipt

Dated events

2022-10-29EPSS moved 0.01 to 0.092025-02-04Added to CISA KEV2025-02-25CISA remediation due2025-03-17EPSS moved 0.05 to 0.862026-08-28EPSS moved 0.87 to 0.98

Movement the material steps

14 Apr 20210.00278
7 Mar 20230.00561 · scoring model v2023.03.01
17 Mar 20250.86315 · crossed 0.10 and 0.50 · scoring model v2025.03.14
23 May 20250.91484 · crossed 0.90
18 Nov 20250.89736 · crossed 0.90
21 Nov 20250.91753 · crossed 0.90
15 Jun 20260.85652 · crossed 0.90 · scoring model v2026.06.15
28 Aug 20260.97939 · crossed 0.90
Show all 32 observations
14 Apr 20210.00278
4 Feb 20220.01055
29 Oct 20220.09029
7 Mar 20230.00561
8 Feb 20240.00264
15 Mar 20240.00288
10 May 20240.00310
17 Sep 20240.00561
17 Dec 20240.00377
5 Feb 20250.04906
17 Mar 20250.86315
19 Mar 20250.87147
20 Mar 20250.8732
25 Mar 20250.88051
27 Mar 20250.88707
28 Mar 20250.85499
29 Mar 20250.88707
30 Mar 20250.85499
1 Apr 20250.83361
23 May 20250.91484
2 Jul 20250.91103
3 Jul 20250.92782
3 Aug 20250.93118
8 Nov 20250.91753
18 Nov 20250.89736
21 Nov 20250.91753
12 Mar 20260.91918
15 Mar 20260.93002
15 Jun 20260.85652
30 Jun 20260.8646
4 Aug 20260.86579
28 Aug 20260.97939

32 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.97939Published2018-11-21Public PoC2024-01-25CISA KEV2025-02-04Index as of2026-09-04

Listed by CISA 2267 days after it published and the record had been public for 7 years, 9 months when this index was last written.

Published 2018-11-21 receipt · Public PoC 2024-01-25 receipt · CISA KEV 2025-02-04 receipt · Index as of 2026-09-04 derived

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