vciy

CVE-2019-15949

INDEX BUILT · 2026-09-20

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Nagios XI before 5.6.6 allows remote command execution as root

CVE-2019-159493 of 4 sources documented this
70

rank 70 = 40 + 22 + 0 + 2 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.77039 · CISA KEV listed  ·  without this subject the record ranks 30

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 8.8, from NVD  ·  without this subject the record ranks 48

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 70

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 68

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 64

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$3.84Mover the next 30 days, if this record is yours
Movement-$32,900on 2025-10-22, the last material move, 10 months before this reading
Basisassumeda published average, not your estate

$3.84M = $4.99M incident cost x 1 exposure x 0.77039 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

0.77039EPSSKEV · LISTED
Severity8.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationin the wild · KEVreceipt
Defenseunaffected versions publishedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2026-05-31, 96 days at 0.77, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

CVE-2017-6884Soliton SystemsActiveMQ BrokerPHPCVE-2023-43208CVE-2021-2710215949

This record is one instance of CWE-78, improper neutralization of special elements used in an os command ('os command injection'). The index holds 6775 prior instances of this class, 121 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

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Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

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Reachnetwork-reachable · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classCWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')receipt
Published consequencesCWE-78: Confidentiality, Integrity, Availability, Non-Repudiation: Execute Unauthorized Code or Commands, DoS: Crash, Exit, or Restart, Read Files or Directories, Modify Files or Directories, Read…[email protected]
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 branchxi 5.6.6receipt
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 2022-05-03receipt
CISA required actionApply updates per vendor instructions.receipt
Published to CISA KEV790 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2021-11-03.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 1 public repository2026-03-17receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2021-11-03receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD8.8 HIGHreceipt
Exploit probability0.77039 · top 0.47% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymitrereceipt
Recorded changes73 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesNagios xireceipt
Published rangesnagios xi < 5.6.6receipt

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

Nagios XI before 5.6.6 allows remote command execution as root. The exploit requires access to the server as the nagios user, or access as the admin user via the web interface. The getprofile.sh script, invoked by downloading a system profile (profile.php?cmd=download), is executed as root via a passwordless sudo entry; the script executes check_plugin, which is owned by the nagios user. A user logged into Nagios XI with permissions to modify plugins, or the nagios user on the server, can modify the check_plugin executable and insert malicious commands to execute as root. receipt

NVD's analysis a second authority

severity
8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-78
affected versions
nagios xi < 5.6.6
also scored by
8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

check it yourself github.com packetstormsecurity.com packetstormsecurity.com receipt

Dated events

2021-04-15EPSS moved 0.33 to 0.402021-11-03Added to CISA KEV2022-05-03CISA remediation due2024-12-17EPSS moved 0.29 to 0.932026-06-15EPSS moved 0.87 to 0.78

Movement the material steps

14 Apr 20210.32932
4 Feb 20220.73643 · crossed 0.50
1 Apr 20220.60894
7 Mar 20230.347 · crossed 0.50 · scoring model v2023.03.01
8 May 20230.47914
1 Dec 20230.51944 · crossed 0.50
1 Feb 20240.45420 · crossed 0.50
27 Jul 20240.51525 · crossed 0.50
3 Oct 20240.45956 · crossed 0.50
9 Nov 20240.32736
17 Dec 20240.93352 · crossed 0.50 and 0.90
17 Mar 20250.903 · scoring model v2025.03.14
17 May 20250.8719 · crossed 0.90
4 Sep 20250.90137 · crossed 0.90
22 Oct 20250.89478 · crossed 0.90
18 Nov 20250.79331
21 Nov 20250.89478
15 Jun 20260.77741 · scoring model v2026.06.15
19 Aug 20260.77039
Show all 59 observations
14 Apr 20210.32932
15 Apr 20210.39616
4 Feb 20220.73643
1 Apr 20220.60894
7 Mar 20230.347
8 Mar 20230.34700
15 Mar 20230.41291
19 Apr 20230.42621
8 May 20230.47914
7 Jun 20230.45703
25 Jun 20230.48939
8 Jul 20230.41689
27 Jul 20230.40293
29 Aug 20230.38752
12 Sep 20230.42288
29 Sep 20230.49685
31 Oct 20230.45154
1 Dec 20230.51944
30 Dec 20230.51207
1 Feb 20240.45420
16 Feb 20240.39426
31 Mar 20240.35522
20 Apr 20240.41124
25 Jun 20240.44232
27 Jul 20240.51525
29 Aug 20240.51563
3 Oct 20240.45956
9 Nov 20240.32736
27 Nov 20240.28537
17 Dec 20240.93352
26 Jan 20250.93310
16 Feb 20250.93821
7 Mar 20250.94124
17 Mar 20250.903
24 Mar 20250.91112
29 Mar 20250.92449
30 Mar 20250.91112
9 Apr 20250.91025
15 Apr 20250.90601
17 May 20250.8719
16 Jul 20250.8733
18 Jul 20250.8719
4 Sep 20250.90137
22 Oct 20250.89478
18 Nov 20250.79331
21 Nov 20250.89478
23 Nov 20250.89465
10 Dec 20250.88747
18 Dec 20250.87055
20 Jan 20260.87053
18 Feb 20260.88593
3 Mar 20260.87053
25 Mar 20260.88593
8 Apr 20260.87053
17 May 20260.87636
31 May 20260.86916
15 Jun 20260.77741
14 Aug 20260.77591
19 Aug 20260.77039

59 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 0.77039Published2019-09-05CISA KEV2021-11-03Public PoC2026-03-17Index as of2026-09-04

Listed by CISA 790 days after it published and the record had been public for 6 years, 11 months when this index was last written.

No material movement in 16 days as of the last ingest this index recorded.

Published 2019-09-05 receipt · CISA KEV 2021-11-03 receipt · Public PoC 2026-03-17 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-78, improper neutralization of special elements used in an os command ('os command injection'). The index holds 6775 prior instances of this class, 121 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2017-6884matches 8 of 8KEV listed · 2017receipt
CVE-2026-25108 · Soliton Systems K.K. FileZenmatches 8 of 8KEV listed · 2026receipt
CVE-2026-34197 · Apache ActiveMQ Brokermatches 8 of 8KEV listed · 2026receipt
CVE-2024-4577 · PHPmatches 7 of 8KEV listed · 2024receipt
CVE-2023-43208matches 7 of 8KEV listed · 2023receipt
CVE-2021-27102matches 7 of 8KEV listed · 2021receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

6775 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

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