CVE-2026-70052 Windows PowerShell - Integer Overflow

Windows PowerShell contains an integer overflow caused by improper handling of integer values, letting authorized attackers execute code locally, exploit requires local access with authorization.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.33% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Integer Overflow
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-122

Vendor fix

Update to the latest version of Windows PowerShell.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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