CVE-2026-96303

mediumpriority · track · 26EPSS 0.006 · 48 %ileDEFRUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.59% (48th) EPSS

CVSS 6.5 · medium

Is it mine?

38 products

Check your exposure

Who says so?

4 sources

cert_bund · msrc_csaf · osv · certfr

EPSS · scored 2026-10-24

Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network.

remediations

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

A vendor fix is available.

FixedPowerShell 7.4msrc_csaf
7.4.21:Security Update:https://github.com/PowerShell/Announcements/blob/main/pwsh/2026/10/CVE-2026-96303.md
https://github.com/PowerShell/Announcements/blob/main/pwsh/2026/10/CVE-2026-96303.md
FixedPowerShell 7.5msrc_csaf
7.5.12:Security Update:https://github.com/PowerShell/Announcements/blob/main/pwsh/2026/10/CVE-2026-96303.md
https://github.com/PowerShell/Announcements/blob/main/pwsh/2026/10/CVE-2026-96303.md
FixedPowerShell 7.6msrc_csaf
7.6.7:Security Update:https://github.com/PowerShell/Announcements/blob/main/pwsh/2026/10/CVE-2026-96303.md
https://github.com/PowerShell/Announcements/blob/main/pwsh/2026/10/CVE-2026-96303.md

cvss

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

6.5

010

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

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:Nprimary · secure@microsoft.com USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-358USCWE-358USCWE-358US

affected products (38)

Products and version ranges known to be affected.

Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Microsoft .NET 10.0all versionscert_bundDEcpe:/a:microsoft:.net:10.0
Microsoft .NET 11.0all versionscert_bundDEcpe:/a:microsoft:.net:11.0
Microsoft .NET 8.0all versionscert_bundDEcpe:/a:microsoft:.net:8.0
Microsoft .NET 9.0all versionscert_bundDEcpe:/a:microsoft:.net:9.0
Microsoft .NET Framework 3.5all versionscert_bundDEcpe:/a:microsoft:.net_framework:3.5
Microsoft .NET Framework 4.6.2all versionscert_bundDEcpe:/a:microsoft:.net_framework:4.6.2
Microsoft .NET Framework 4.7all versionscert_bundDEcpe:/a:microsoft:.net_framework:4.7
Microsoft .NET Framework 4.7.1all versionscert_bundDEcpe:/a:microsoft:.net_framework:4.7.1
Microsoft .NET Framework 4.7.2all versionscert_bundDEcpe:/a:microsoft:.net_framework:4.7.2
Microsoft .NET Framework 4.8all versionscert_bundDEcpe:/a:microsoft:.net_framework:4.8
Microsoft .NET Framework 4.8.1all versionscert_bundDEcpe:/a:microsoft:.net_framework:4.8.1
Microsoft ASP.NET Core 10.0all versionscert_bundDEcpe:/a:microsoft:asp.net:core_10.0
Microsoft ASP.NET Core 8.0all versionscert_bundDEcpe:/a:microsoft:asp.net:core_3.1
Microsoft ASP.NET Core 8.0all versionscert_bundDEcpe:/a:microsoft:asp.net:core_8.0
Microsoft ASP.NET Core 9.0all versionscert_bundDEcpe:/a:microsoft:asp.net:core_9.0
Microsoft PowerShell 7.4all versionscert_bundDEcpe:/a:microsoft:powershell:7.4
Microsoft PowerShell 7.5all versionscert_bundDEcpe:/a:microsoft:powershell:7.5
Microsoft PowerShell 7.6all versionscert_bundDEcpe:/a:microsoft:powershell:7.6
Microsoft SysInternals Suiteall versionscert_bundDEcpe:/a:microsoft:sysinternals:suite

showing 20 of 38

advisories (4)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3893Microsoft Entwicklerwerkzeuge: Mehrere SchwachstellenDeutsch2026-10-13csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft .NET Framework, Microsoft .NET, Microsoft ASP.NET, Microsoft Visual Studio 2022, Microsoft Visual Studio 2026, Microsoft Visual Studio Code, Microsoft SysInternals und Microsoft PowerShell ausnutzen, um seine Privilegien zu erhöhen, um Code auszuführen, um Informationen offenzulegen, um Sicherheitsmechanismen zu umgehen und um einen Denial of Service Zustand herbeizuführen.
msrc_CVE-2026-96303Microsoft PowerShell Security Feature Bypass Vulnerability2026-10-13csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
BIT-powershell-2026-96303Microsoft PowerShell Security Feature Bypass Vulnerability2026-10-20vendor · osvUS
Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network.
CERTFR-2026-AVI-1316Multiples vulnérabilités dans les produits MicrosoftFrançais2026-10-14vendor · certfrFR

sources

Which sources assert this record, and when.

cert_bund msrc_csaf osv certfr NVD CVE.org MITRE

published 2026-10-13modified 2026-10-22

references (1) nvd

External citations — patches, advisories, analysis.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96303Vendor Advisory

scry

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