vciy

CVE-2024-38031

INDEX BUILT · 2026-09-20

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Windows Online Certificate Status Protocol (OCSP) Server Denial of Service Vulnerability

CVE-2024-380314 of 4 sources documented this
26

rank 26 = 1 + 19 + 0 + 6 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.02518  ·  without this subject the record ranks 25

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.5, from the CNA  ·  without this subject the record ranks 7

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 26

How much of the world it touches

NVD CPE configurations

6 products in the CPE ranges  ·  without this subject the record ranks 20

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 26

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$76,900over the next 30 days, if this record is yours
Movement-$650,000on 2025-11-21, the last material move, 7 months before this reading
Basisassumeda published average, not your estate

$76,900 = $4.99M incident cost x 0.6121449559255632 exposure x 0.02518 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

0.02518EPSSNOT IN KEVas of 2026-09-20
Severity7.5 HIGHreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defensefix version namedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2025-11-21, 230 days at 0.03, as of 2026-07-09. arc-rules@v1

Foresight · where to check next

Microsoft .NETCVE-2023-44487SolarWinds Serv-UCVE-2004-1464MicrosoftCisco IOS XR38031

This record is one instance of CWE-400, uncontrolled resource consumption. The index holds 3763 prior instances of this class, 8 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

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

Running Microsoft Windows Server 2019? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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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 availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-400 Uncontrolled Resource Consumptionreceipt
Published consequencesCWE-400: Availability: DoS: Crash, Exit, or Restart, DoS: Resource Consumption (CPU), DoS: Resource Consumption (Memory), DoS: Resource Consumption (Other)…[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed in10.0.17763.6054; 10.0.20348.2582; 10.0.25398.1009; 10.0.14393.7159; 6.0.6003.22769; 6.1.7601.27219; 6.2.9200.24975; 6.3.9600.22074receipt
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 CNA7.5 HIGHreceipt
Exploit probability0.02518 · top 16% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes23 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Windows Server 2019; Microsoft Windows Server 2019 (Server Core installation); Microsoft Windows Server 2022; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)…receipt
Published rangesmicrosoft windows server 2008 r2; microsoft windows server 2012 r2; microsoft windows server 2016 < 10.0.14393.7159; microsoft windows server 2019 < 10.0.17763.6054receipt
Show all 6 published ranges
microsoft windows server 2008 r2
microsoft windows server 2012 r2
microsoft windows server 2016 < 10.0.14393.7159
microsoft windows server 2019 < 10.0.17763.6054
microsoft windows server 2022 < 10.0.20348.2582
microsoft windows server 2022 23h2 < 10.0.25398.1009
Fixed in10.0.17763.6054; 10.0.20348.2582; 10.0.25398.1009; 10.0.14393.7159; 6.0.6003.22769; 6.1.7601.27219; 6.2.9200.24975; 6.3.9600.22074receipt

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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Attack path

Unauthenticated network requestno credentials, no interactionMicrosoft Windows Server 2019CWE-400 uncontrolled resource con…Availability lossA:Hexploits CWE-400data compromise

What it is stated by the CNA

Windows Online Certificate Status Protocol (OCSP) Server Denial of Service Vulnerability receipt

NVD's analysis a second authority

weakness
CWE-400
affected versions
microsoft windows server 2008 r2; microsoft windows server 2012 r2; microsoft windows server 2016 < 10.0.14393.7159; and 3 more, listed in full below
also scored by
[email protected] 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

check it yourself msrc.microsoft.com receipt

Dated events

2025-03-17EPSS moved 0.00 to 0.142025-11-18EPSS moved 0.08 to 0.292025-11-21EPSS moved 0.29 to 0.08

Movement the material steps

10 Jul 20240.00046
17 Mar 20250.13626 · crossed 0.10 · scoring model v2025.03.14
29 Mar 20250.25837
17 Aug 20250.06456 · crossed 0.10
18 Nov 20250.28871 · crossed 0.10
21 Nov 20250.07584 · crossed 0.10
15 Jun 20260.02538 · scoring model v2026.06.15
9 Jul 20260.02518
Show all 23 observations
10 Jul 20240.00046
12 Jul 20240.00063
21 Sep 20240.00090
26 Nov 20240.00084
12 Dec 20240.00063
17 Dec 20240.00053
17 Mar 20250.13626
25 Mar 20250.16952
29 Mar 20250.25837
30 Mar 20250.16952
4 Apr 20250.2175
15 Apr 20250.19175
25 Apr 20250.20383
5 May 20250.22951
15 Jul 20250.2579
17 Aug 20250.06456
31 Aug 20250.07584
18 Nov 20250.28871
21 Nov 20250.07584
18 Feb 20260.05582
3 Mar 20260.05152
15 Jun 20260.02538
9 Jul 20260.02518

23 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 0.02518Published2024-07-09Index as of2026-07-09

The record had been public for 2 years when this index was last written.

Published 2024-07-09 receipt · Index as of 2026-07-09 derived

The pattern, elsewhere

This record is one instance of CWE-400, uncontrolled resource consumption. The index holds 3763 prior instances of this class, 8 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2023-38180 · Microsoft .NET 6.0matches 9 of 9KEV listed · 2023receipt
CVE-2023-44487matches 8 of 8KEV listed · 2023receipt
CVE-2026-28318 · SolarWinds Serv-Umatches 8 of 9KEV listed · 2026receipt
CVE-2004-1464matches 7 of 8KEV listed · 2005receipt
CVE-2026-45498 · Microsoft Defender Antimalware Platformmatches 7 of 9KEV listed · 2026receipt
CVE-2020-3566 · Cisco IOS XR Softwarematches 7 of 9KEV listed · 2020receipt

"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

3763 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.

Siblings and hubs

Records related to this one

Its defect family

microsoft windows server 2019

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Family membership: held values

Nothing we hold separates this record from the others in its defect family. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.

Browse the index from here

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What usually comes next

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