Code Injection Vulnerability in Microsoft PowerShell
CVE-2026-70338

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Powershell 7.4
Powershell 7.5
Powershell 7.6
Vendor
CVE Published:
11 August 2026

What is CVE-2026-70338?

A code injection vulnerability in Microsoft PowerShell could allow an unauthorized attacker to bypass a critical security feature. This can potentially enable malicious code execution in the environment, posing significant risks to the systems and data integrity. Users are advised to review security practices and apply necessary patches to safeguard against potential exploitation.

Affected Version(s)

PowerShell 7.4 7.4.0 < 7.4.19.0

PowerShell 7.5 7.5.0 < 7.5.10.0

PowerShell 7.6 7.6.0 < 7.6.5

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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