CVE-2026-70337 Microsoft PowerShell Remote Code Execution Vulnerability
An attacker can execute arbitrary code over the network via a relative path traversal vulnerability in Microsoft PowerShell Core.
- 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-2026-70337?
CVE-2026-70337 is a high-severity path traversal vulnerability in Microsoft PowerShell 7.4, published on 11 Aug 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
Relative path traversal in Microsoft PowerShell Core allows an unauthorized attacker to execute code over a network.
Weakness: CWE-23
Which versions are affected by CVE-2026-70337?
1 open source package ship an affected version, including powershell. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
powershell Bitnami | From 7.4.0 | 7.4.19, 7.5.10, 7.6.5 |
Products include Microsoft Powershell.
How do I fix CVE-2026-70337?
Upgrade powershell to a fixed version for your release line: 7.4.19, 7.5.10 or 7.6.5.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-70337 being exploited?
There is no known exploitation of CVE-2026-70337 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-2022-41076 PowerShell Remote Code Execution Vulnerability
- CVE-2026-50523 Microsoft PowerShell Remote Code Execution Vulnerability
- CVE-2026-70338 Microsoft PowerShell Security Feature Bypass Vulnerability
Sources
Also known as BIT-powershell-2026-70337, GHSA-c9mw-2c7x-gc2r, MINI-fx6v-qf63-6rx3.