What is CVE-2026-96303?

CVE-2026-96303 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft PowerShell Security Feature Bypass Vulnerability

Which CVE IDs does CVE-2026-96303 cover?

CVE-2026-96303 covers the following CVE IDs: CVE-2026-96303. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-96303?

CVE-2026-96303 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-96303?

CVE-2026-96303 affects 3 products, including: PowerShell 7.4; PowerShell 7.5; PowerShell 7.6.

CVE-2026-96303HighCVSS 6.5

Microsoft PowerShell Security Feature Bypass Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 13, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-96303 →

📋 Description

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

🎯 Affected products3

PowerShell 7.4
PowerShell 7.5
PowerShell 7.6

✅ Remediation

KBRelease Notes (Security Update) — fixed build 7.5.12 KBRelease Notes (Security Update) — fixed build 7.4.21 KBRelease Notes (Security Update) — fixed build 7.6.7

🔗 References (5)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96303
patchhttps://github.com/PowerShell/PowerShell/releases/tag/v7.5.12
referencehttps://github.com/PowerShell/Announcements/blob/main/pwsh/2026/10/CVE-2026-96303.md
patchhttps://github.com/PowerShell/PowerShell/releases/tag/v7.4.21
patchhttps://github.com/PowerShell/PowerShell/releases/tag/v7.6.7