CVE-2023-38171

highpriority · track · 25EPSS 0.710 · 99 %ileDEEUNLRUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

71.0% (99th) EPSS

CVSS 7.5 · high

Is it mine?

83 products

Check your exposure

Who says so?

9 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-22

Microsoft QUIC Denial of Service Vulnerability

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedST7 ScadaConnect (6NH7997-5DA10-0AA0)siemens_psirt
Update to V1.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109955597/
Fixed.NET 7.0msrc_csaf
7.0.13:Security Update:https://support.microsoft.com/help/5032875
https://support.microsoft.com/help/5032875
FixedMicrosoft Visual Studio 2022 version 17.2msrc_csaf
17.2.21:Security Update:https://docs.microsoft.com/en-us/visualstudio/releases/2022/release-notes
https://docs.microsoft.com/en-us/visualstudio/releases/2022/release-notes
FixedMicrosoft Visual Studio 2022 version 17.4msrc_csaf
17.4.13:Security Update:https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
FixedMicrosoft Visual Studio 2022 version 17.6msrc_csaf
17.6.9:Security Update:https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
FixedMicrosoft Visual Studio 2022 version 17.7msrc_csaf
17.7.6:Security Update:https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
FixedPowerShell 7.3msrc_csaf
7.3.9:Security Update:https://github.com/PowerShell/Announcements/issues/53
https://github.com/PowerShell/Announcements/issues/53
FixedWindows 11 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.22621.2428:Security Update:https://support.microsoft.com/help/5031354
https://support.microsoft.com/help/5031354
FixedWindows 11 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.22621.2428:Security Update:https://support.microsoft.com/help/5031354
https://support.microsoft.com/help/5031354
FixedWindows 11 version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.22000.2538:Security Update:https://support.microsoft.com/help/5031358
https://support.microsoft.com/help/5031358
FixedWindows 11 version 21H2 for x64-based Systemsmsrc_csaf
10.0.22000.2538:Security Update:https://support.microsoft.com/help/5031358
https://support.microsoft.com/help/5031358
FixedWindows Server 2022msrc_csaf
10.0.20348.2031:Security Update:https://support.microsoft.com/help/5031364
https://support.microsoft.com/help/5031364
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.2031:Security Update:https://support.microsoft.com/help/5031364
https://support.microsoft.com/help/5031364
FixedST7 ScadaConnect (6NH7997-5DA10-0AA0)cisa_csaf_ot
Update to V1.1 or later version
https://support.industry.siemens.com/cs/ww/en/view/109955597/

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · CISA US

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · secure@microsoft.com USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20USCWE-20USCWE-400USCWE-476USCWE-476USCWE-476USCWE-476US

affected products (83)

Products and version ranges known to be affected.

Hitachi Storageall versionscert_bundDEcpe:/h:hitachi:storage:-
Microsoft ASP.NET Core 6.0all versionscert_bundDEcpe:/a:microsoft:asp.net:core_6.0
Microsoft ASP.NET Core 7.0all versionscert_bundDEcpe:/a:microsoft:asp.net:core_7.0
Microsoft Azure DevOps Server 2020.0.2all versionscert_bundDEcpe:/o:microsoft:azure_devops_server:2020.0.2
Microsoft Azure DevOps Server 2020.1.2all versionscert_bundDEcpe:/o:microsoft:azure_devops_server:2020.1.2
Microsoft Visual Studio 2022 version 17.2all versionscert_bundDEcpe:/a:microsoft:visual_studio_2022:version_17.2
Microsoft Visual Studio 2022 version 17.4all versionscert_bundDEcpe:/a:microsoft:visual_studio_2022:version_17.4
Microsoft Visual Studio 2022 version 17.6all versionscert_bundDEcpe:/a:microsoft:visual_studio_2022:version_17.6
Microsoft Visual Studio 2022 version 17.7all versionscert_bundDEcpe:/a:microsoft:visual_studio_2022:version_17.7
Microsoft Windows 10all versionscert_bundDEcpe:/o:microsoft:windows_10:-
Microsoft Windows 10 Version 1607all versionscert_bundDEcpe:/o:microsoft:windows_10:version_1607
Microsoft Windows 10 Version 1809all versionscert_bundDEcpe:/o:microsoft:windows_10:version_1809
Microsoft Windows 10 Version 21H2all versionscert_bundDEcpe:/o:microsoft:windows_10:version_21h2
Microsoft Windows 10 Version 22H2all versionscert_bundDEcpe:/o:microsoft:windows_10:version_22h2
Microsoft Windows 11 Version 22H2all versionscert_bundDEcpe:/o:microsoft:windows_11:version_22h2
Microsoft Windows 11 version 21H2all versionscert_bundDEcpe:/o:microsoft:windows_11:version_21h2
Microsoft Windows Server 2008 R2 SP1all versionscert_bundDEcpe:/o:microsoft:windows_server:2008_r2_sp1
Microsoft Windows Server 2008 SP2all versionscert_bundDEcpe:/o:microsoft:windows_server:2008_sp2
Microsoft Windows Server 2012all versionscert_bundDEcpe:/o:microsoft:windows_server_2012:-
Microsoft Windows Server 2012 R2all versionscert_bundDEcpe:/o:microsoft:windows_server_2012_r2:-

showing 20 of 83

advisories (9)

Vendor and ecosystem advisories describing this.

NCSC-2024-0246Kwetsbaarheden verholpen in Siemens productenNL2024-06-11csaf · ncsc_nlNL
Siemens heeft kwetsbaarheden verholpen in diverse producten, zoals SCALANCE, SICAM, Tecnomatix, SITOP en PowerSys.
SSA-341067SSA-341067: Multiple vulnerabilities in third-party components in ST7 ScadaConnect before V1.12024-06-11csaf · siemens_psirtDE
Siemens has released a new version for ST7 ScadaConnect and recommends to update to the latest version.
WID-SEC-W-2023-2606Microsoft Windows und Microsoft Windows Server: Mehrere SchwachstellenDeutsch2023-10-10csaf · cert_bundDE
Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in verschiedenen Versionen von Microsoft Windows und Microsoft Windows Server ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen und Privilegien zu erweitern.
WID-SEC-W-2023-2611Microsoft Developer Tools: Mehrere SchwachstellenDeutsch2023-10-10csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Microsoft Developer Tools ausnutzen, um seine Privilegien zu erhöhen und einen Denial of Service Zustand zu verursachen.
msrc_CVE-2023-38171Microsoft QUIC Denial of Service Vulnerability2023-10-10csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
GHSA-xh5m-8qqp-c5x7Remote Denial of Service Vulnerability in Microsoft.Native.Quic.MsQuic.Schannel2023-10-10ghsa · osvUS
### Impact The MsQuic server application or process will crash, resulting in a denial of service. ### Patches The following patch was made: - Don't Allow Version Negotiation Packets for Server Connections - https://github.com/microsoft/msquic/commit/3226cff07d22662f16fc98d605656860e64cd343 ### Workarounds Beyond upgrading to the patched versions, there is no other workaround. You must upgrade or disable MsQuic functionality.
ICSA-24-165-04Siemens ST7 ScadaConnect2024-06-11icsa · cisa_csaf_otUS
Siemens has released a new version for ST7 ScadaConnect and recommends to update to the latest version.
BIT-dotnet-2023-38171Microsoft QUIC Denial of Service Vulnerability2024-03-06vendor · osvUS
Microsoft QUIC Denial of Service Vulnerability
BIT-dotnet-sdk-2023-38171Microsoft QUIC Denial of Service Vulnerability2024-03-06vendor · osvUS
Microsoft QUIC Denial of Service Vulnerability

also known as (7)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv cert_bund ncsc_nl siemens_psirt msrc_csaf cisa_csaf_ot NVD CVE.org MITRE

published 2023-10-10modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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