vciy

CVE-2022-37958

INDEX BUILT · 2026-09-20

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SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerability

CVE-2022-379584 of 4 sources documented this
50

rank 50 = 22 + 20 + 1 + 7 + 0

rank@v1 · this cycle

Someone is already using it

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

EPSS 0.86045  ·  without this subject the record ranks 28

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 8.1, from the CNA  ·  without this subject the record ranks 30

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2026-06-13  ·  without this subject the record ranks 49

How much of the world it touches

NVD CPE configurations

7 products in the CPE ranges  ·  without this subject the record ranks 43

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 50

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.29Mover the next 30 days, if this record is yours
Movement+$60,000on 2025-12-28, the last material move, 8 months before this reading
Basisassumeda published average, not your estate

$4.29M = $4.99M incident cost x 1 exposure x 0.86045 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

0.86045EPSSNOT IN KEVas of 2026-09-20
Severity8.1 HIGHreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationnone in held sources
Defensefix version namedreceipt
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 87 days at 0.86, as of 2026-09-10. 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

Running Microsoft Windows 10 Version 1809? Check your version

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · no privileges required · no user interaction · high attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classNo CWE mapping in held sources.

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed in10.0.17763.3406; 10.0.19043.2006; 10.0.20348.1006; 10.0.19042.2006; 10.0.22000.978; 10.0.19044.2006; 10.0.10240.19444; 10.0.14393.5356; 6.1.7601.26115…receipt
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.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA8.1 HIGHreceipt
Exploit probability0.86045 · top 0.28% of all CVEsreceipt
Blast breadth2 products across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes63 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Windows 10 Version 1809; Microsoft Windows Server 2019; Microsoft Windows Server 2019 (Server Core installation); Microsoft Windows 10 Version 21H1; Microsoft Windows Server 2022…receipt
Published rangesmicrosoft windows 10 20h2; microsoft windows 10 21h1; microsoft windows 10 21h2; microsoft windows 10 1607receipt
Show all 7 published ranges
microsoft windows 10 20h2
microsoft windows 10 21h1
microsoft windows 10 21h2
microsoft windows 10 1607
microsoft windows 10 1809
microsoft windows server 2008 r2
microsoft windows server 2012 r2
Fixed in10.0.17763.3406; 10.0.19043.2006; 10.0.20348.1006; 10.0.19042.2006; 10.0.22000.978; 10.0.19044.2006; 10.0.10240.19444; 10.0.14393.5356; 6.1.7601.26115…receipt

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

SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerability receipt

NVD's analysis a second authority

affected versions
microsoft windows 10 20h2; microsoft windows 10 21h1; microsoft windows 10 21h2; and 4 more, listed in full below
also scored by
[email protected] 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H · [email protected] 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

check it yourself msrc.microsoft.com receipt

Dated events

2023-03-07EPSS moved 0.02 to 0.082026-06-15EPSS moved 0.18 to 0.86

Movement the material steps

14 Sep 20220.00885
7 Mar 20230.07896 · scoring model v2023.03.01
17 Mar 20250.08606 · scoring model v2025.03.14
19 Mar 20250.14479 · crossed 0.10
20 Mar 20250.08606 · crossed 0.10
27 Mar 20250.14479 · crossed 0.10
28 Mar 20250.08606 · crossed 0.10
29 Mar 20250.14155 · crossed 0.10
30 Mar 20250.08397 · crossed 0.10
21 Dec 20250.1201 · crossed 0.10
27 Dec 20250.09427 · crossed 0.10
28 Dec 20250.10629 · crossed 0.10
15 Jun 20260.85646 · crossed 0.50 · scoring model v2026.06.15
10 Sep 20260.86045

This score more than doubled inside 72 hours. Both observations are in the full history below.

Show all 63 observations
14 Sep 20220.00885
17 Sep 20220.02251
7 Mar 20230.07896
21 Mar 20230.06855
9 Apr 20230.04958
12 Apr 20230.01667
8 May 20230.00785
8 Jul 20230.00652
10 Jul 20230.00543
21 Jul 20230.00672
3 Aug 20230.00474
14 Aug 20230.00443
20 Sep 20230.00594
16 Oct 20230.00705
24 Feb 20240.00626
5 Apr 20240.00662
2 Jul 20240.00756
30 Jul 20240.01069
28 Aug 20240.00986
9 Oct 20240.00696
5 Dec 20240.00706
17 Dec 20240.00522
2 Jan 20250.00469
14 Jan 20250.00604
29 Jan 20250.01238
12 Feb 20250.00569
25 Feb 20250.02166
11 Mar 20250.00896
17 Mar 20250.08606
19 Mar 20250.14479
20 Mar 20250.08606
27 Mar 20250.14479
28 Mar 20250.08606
29 Mar 20250.14155
30 Mar 20250.08397
24 Apr 20250.07194
10 Jul 20250.07629
17 Jul 20250.07821
30 Jul 20250.09618
2 Sep 20250.07629
1 Oct 20250.08629
27 Oct 20250.07629
28 Oct 20250.08629
18 Nov 20250.0641
21 Nov 20250.08949
21 Dec 20250.1201
22 Dec 20250.10629
27 Dec 20250.09427
28 Dec 20250.10629
9 Mar 20260.11126
25 Mar 20260.11607
30 Mar 20260.10626
13 Apr 20260.11575
16 Apr 20260.10626
24 Apr 20260.11575
22 May 20260.1185
1 Jun 20260.11575
13 Jun 20260.18
15 Jun 20260.85646
5 Jul 20260.85762
27 Jul 20260.83567
3 Aug 20260.85762
10 Sep 20260.86045

63 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 0.86045Published2022-09-13Index as of2026-09-10

Exploit probability more than doubled between 2022-09-14 and 2022-09-17 (0.00885 → 0.02251) and the record had been public for 3 years, 11 months when this index was last written.

Published 2022-09-13 receipt · Index as of 2026-09-10 derived

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