vciy

CVE-2023-38180

INDEX BUILT · 2026-09-20

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.NET and Visual Studio Denial of Service Vulnerability

CVE-2023-381804 of 4 sources documented this
72

rank 72 = 40 + 19 + 0 + 7 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.14016 · CISA KEV listed  ·  without this subject the record ranks 32

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 53

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 72

How much of the world it touches

NVD CPE configurations

8 products in the CPE ranges  ·  without this subject the record ranks 65

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 66

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$428,000over the next 30 days, if this record is yours
Movement-$1.44Mon 2025-11-21, the last material move, 9 months before this reading
Basisassumeda published average, not your estate

$428,000 = $4.99M incident cost x 0.6121449559255632 exposure x 0.14016 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

0.14016EPSSKEV · LISTED
Severity7.5 HIGHreceipt
Harmunauthenticated · networkreceipt
Exploitationin the wild · KEVreceipt
Defensefix version namedreceipt
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 81 days at 0.14, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

CVE-2023-44487SolarWinds Serv-UCVE-2004-1464MicrosoftCisco IOS XR38180

This record is one instance of CWE-400, uncontrolled resource consumption. The index holds 3762 prior instances of this class, 7 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 .NET 6.0? Check your version

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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]
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed in6.0.21; 7.0.10; 2.1.40; 17.2.18; 17.4.10; 17.6.6receipt
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 2023-08-30receipt
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.receipt
Published to CISA KEV1 dayderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2023-08-09.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed2023-08-09receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA7.5 HIGHreceipt
Exploit probability0.14016 · top 4% of all CVEsreceipt
Blast breadth4 products across 2 vendorsderived
Assigned bymicrosoftreceipt
Recorded changes50 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft .NET 6.0; Microsoft .NET 7.0; Microsoft ASP.NET Core 2.1; Microsoft Visual Studio 2022 version 17.2; Microsoft Visual Studio 2022 version 17.4; Microsoft Visual Studio 2022 version 17.6receipt
Published rangesmicrosoft .net >= 6.0.0 < 6.0.21; microsoft .net >= 7.0.0 < 7.0.10; microsoft asp.net core >= 2.1 < 2.1.40; microsoft visual studio 2022 >= 17.2.0 < 17.2.18receipt
Show all 8 published ranges
microsoft .net >= 6.0.0 < 6.0.21
microsoft .net >= 7.0.0 < 7.0.10
microsoft asp.net core >= 2.1 < 2.1.40
microsoft visual studio 2022 >= 17.2.0 < 17.2.18
microsoft visual studio 2022 >= 17.4.0 < 17.4.10
microsoft visual studio 2022 >= 17.6.0 < 17.6.6
fedoraproject fedora 37
fedoraproject fedora 38
Fixed in6.0.21; 7.0.10; 2.1.40; 17.2.18; 17.4.10; 17.6.6receipt

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

.NET and Visual Studio Denial of Service Vulnerability receipt

NVD's analysis a second authority

weakness
CWE-400
affected versions
microsoft .net >= 6.0.0 < 6.0.21; microsoft .net >= 7.0.0 < 7.0.10; microsoft asp.net core >= 2.1 < 2.1.40; and 5 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

2023-08-09Added to CISA KEV2023-08-30CISA remediation due2025-03-17EPSS moved 0.01 to 0.562025-04-13EPSS moved 0.56 to 0.002026-06-15EPSS moved 0.01 to 0.16

Movement the material steps

9 Aug 20230.00046
17 Mar 20250.56183 · crossed 0.10 and 0.50 · scoring model v2025.03.14
29 Mar 20250.71503
30 Mar 20250.56183
13 Apr 20250.00133 · crossed 0.10 and 0.50
18 Nov 20250.47967 · crossed 0.10
21 Nov 20250.00882 · crossed 0.10
15 Jun 20260.15642 · crossed 0.10 · scoring model v2026.06.15
19 Aug 20260.14016

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

Show all 39 observations
9 Aug 20230.00046
10 Aug 20230.00429
11 Aug 20230.00744
20 Aug 20230.00484
10 Oct 20230.00481
13 Oct 20230.00693
10 Nov 20230.00788
18 Dec 20230.01049
19 Jan 20240.01014
29 Jan 20240.00717
3 Mar 20240.00512
3 Jun 20240.00710
8 Jul 20240.00860
3 Aug 20240.00871
14 Aug 20240.01089
9 Sep 20240.01009
17 Oct 20240.01036
17 Dec 20240.00243
1 Jan 20250.00664
28 Feb 20250.00931
11 Mar 20250.01002
17 Mar 20250.56183
29 Mar 20250.71503
30 Mar 20250.56183
13 Apr 20250.00133
20 Apr 20250.00137
3 May 20250.00133
30 May 20250.00137
12 Jun 20250.00133
26 Aug 20250.00193
22 Oct 20250.0057
29 Oct 20250.00882
18 Nov 20250.47967
21 Nov 20250.00882
15 Jun 20260.15642
18 Jun 20260.15519
20 Jul 20260.14688
8 Aug 20260.1481
19 Aug 20260.14016

39 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 0.14016Published2023-08-08CISA KEV2023-08-09Index as of2026-09-04

Listed by CISA one day after it published, exploit probability more than doubled between 2023-08-09 and 2023-08-10 (0.00046 → 0.00429) and the record had been public for 3 years when this index was last written.

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

Published 2023-08-08 receipt · CISA KEV 2023-08-09 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-400, uncontrolled resource consumption. The index holds 3762 prior instances of this class, 7 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

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
CVE-2020-3569 · 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

3762 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 .net 6.0

Of the 8 records in this family, this is the only one holding a stated fix version: 6.0.21; 7.0.10; 2.1.40; 17.2.18; 17.4.10; 17.6.6.

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

Family membership: held values

This record is one of a group, and the group's page describes all of them. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.

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What usually comes next

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