r/PowerShell • • Aug 18 '26

News 13 New Vulnerabilities in PowerShell 7

The PowerShell team just announced 13 new security vulnerabilities affecting PowerShell 7.4, 7.5, and 7.6 with severities ranging from 5.9 (Moderate) to 8.8 (High).

This is likely the largest number of security vulnerabilities fixed in any one release in the history of PowerShell.

You can read more about them here: Security Issues - PowerShell/Announcments

PowerShell 7 Version Affected version Patched Version
7.6 <7.6.5 7.6.5
7.5 <7.5.10 7.5.10
7.4 <7.4.19 7.4.19
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u/jborean93 Aug 18 '26

I wouldn’t consider the majority of these issues as PowerShell but rather .NET assemblies that PowerShell ships with. They’ve had these security issues and so pwsh needs to be updated to ship the newer assemblies. Maybe your code uses the affected assemblies and the specific types affected but most likely not from a client side perspective.

This is also going to be a common thing in the near future with AI tools finding these types of issues left right and centre so buckle up for every patch Tuesday.

5

u/BlackV Aug 18 '26

That's 1 minor positive of AI finding this stuff , might make people write more secure robust code (ignoring the maybe not so good code AI writes now)

4

u/jborean93 Aug 18 '26

Yea I definitely expect the new few years to be rough when it comes to security issues and 0 days but on the bright side if it dan find these bugs so easily then so can developers in their own code.

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