CVE-2026-42916
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Integer Underflow in Windows NT OS Kernel Leads to Privilege Escalation

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Microsoft Corporation

Description
Integer underflow (wrap or wraparound) in Windows NT OS Kernel allows an authorized attacker to elevate privileges locally.
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Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-10
AI Q&A
2026-06-09
EPSS Evaluated
N/A
NVD
CVE-2026-42916
EUVD
EUVD-2026-35600
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows_nt_os_kernel *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-190 The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
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Executive Summary

This vulnerability is an integer underflow (also known as wrap or wraparound) in the Windows NT OS Kernel. It allows an authorized attacker to elevate their privileges locally on the affected system.

Impact Analysis

The vulnerability can impact you by allowing an authorized attacker to elevate their privileges on the system. This means the attacker could gain higher-level access than intended, potentially leading to full control over the affected system.

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