CVE-2026-96303 Microsoft PowerShell Security Feature Bypass Vulnerability
An attacker can bypass security features in Microsoft PowerShell over a network due to improper security checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-96303?
CVE-2026-96303 is a medium-severity vulnerability in Microsoft PowerShell 7.4, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network.
Weakness: CWE-358
Which versions are affected by CVE-2026-96303?
1 open source package ship an affected version, including powershell. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
powershell Bitnami | From 7.4.0 | 7.4.21, 7.5.12, 7.6.7 |
Products include Microsoft Powershell.
How do I fix CVE-2026-96303?
Upgrade powershell to a fixed version for your release line: 7.4.21, 7.5.12 or 7.6.7.
Is CVE-2026-96303 being exploited?
There is no known exploitation of CVE-2026-96303 in the wild and no public exploit code.
Other vulnerabilities in Microsoft PowerShell 7.4
- CVE-2018-8327 Code injection in PowerShell Editor
- CVE-2026-96251 Microsoft PowerShell Remote Code Execution Vulnerability
- CVE-2026-70337 Microsoft PowerShell Remote Code Execution Vulnerability
- CVE-2022-41076 PowerShell Remote Code Execution Vulnerability
- CVE-2026-50523 Microsoft PowerShell Remote Code Execution Vulnerability
Sources
Also known as BIT-powershell-2026-96303, GHSA-p862-mv9f-9294.