CVE-2026-26143

highpriority · track · 0EPSS 0.005 · 45 %ileDEEUNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.54% (45th) EPSS

CVSS 7.8 · high

Is it mine?

120 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.

remediations

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

A vendor fix is available.

FixedPowerShell 7.4msrc_csaf
7.4.14:Security Update:https://github.com/PowerShell/Announcements/issues/82
https://github.com/PowerShell/Announcements/issues/82
FixedPowerShell 7.5msrc_csaf
7.5.5:Security Update:https://github.com/PowerShell/Announcements/issues/82
https://github.com/PowerShell/Announcements/issues/82

cvss

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

7.8

010

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

v3.17.8highAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · NCSC-NL NL

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20USCWE-20US

affected products (120)

Products and version ranges known to be affected.

Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Hitachi Virtual Storage Platform 5100all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5100
Hitachi Virtual Storage Platform 5100Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5100h
Hitachi Virtual Storage Platform 5200all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5200
Hitachi Virtual Storage Platform 5200Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5200h
Hitachi Virtual Storage Platform 5500all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5500
Hitachi Virtual Storage Platform 5500Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5500h
Hitachi Virtual Storage Platform 5600all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5600
Hitachi Virtual Storage Platform 5600Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5600h
Microsoft .NET 10.0all versionscert_bundDEcpe:/a:microsoft:.net:10.0
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 4.7.2all 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 PowerShell 7.4all versionscert_bundDEcpe:/a:microsoft:powershell:7.4:rc1
Microsoft PowerShell 7.5all versionscert_bundDEcpe:/a:microsoft:powershell:7.5
Microsoft Visual Studio 2017 version 15.9 (includes 15.0-15.8)all versionscert_bundDE
Microsoft Visual Studio 2019 version 16.11 (includes 16.0-16.10)all versionscert_bundDE

showing 20 of 120

advisories (4)

Vendor and ecosystem advisories describing this.

NCSC-2026-0114Kwetsbaarheden verholpen in Microsoft Developer toolsNL2026-04-14csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in .NET, .NET Framework, Visual Studio en PowerShell.
WID-SEC-W-2026-1100Microsoft DeveloperTools: Mehrere SchwachstellenDeutsch2026-04-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Visual Studio, Microsoft .NET Framework, Microsoft .NET, Microsoft PowerShell und Microsoft Visual Studio Code ausnutzen, um vertrauliche Informationen offenzulegen, Spoofing-Angriffe durchzuführen, einen Denial-of-Service-Zustand herbeizuführen oder Sicherheitsmaßnahmen zu umgehen, was möglicherweise die Ausführung von beliebigem Code ermöglicht.
msrc_CVE-2026-26143Microsoft PowerShell Security Feature Bypass Vulnerability2026-04-14csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
BIT-powershell-2026-26143Microsoft PowerShell Security Feature Bypass Vulnerability2026-04-28vendor · osvUS
Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

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

published 2026-04-14modified 2026-10-26

references (3)

External citations — patches, advisories, analysis.

scry

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