Elevation of Privilege Vulnerability in Microsoft NAT Helper Components
CVE-2026-58537

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 11 Version 24h2
Windows 11 Version 25h2
Windows 11 Version 26h1
Windows Server 2025
Vendor
CVE Published:
14 July 2026

What is CVE-2026-58537?

This vulnerability in the Microsoft NAT Helper Components (ipnathlp.dll) allows an attacker with local access to elevate their privileges by exploiting a use-after-free condition. This can lead to unauthorized actions and access within the affected system. Properly implemented safeguards are essential to mitigate such risks and protect users from potential exploitation.

Affected Version(s)

Windows 11 Version 24H2 ARM64-based Systems 10.0.26100.0 < 10.0.26100.8875

Windows 11 Version 25H2 ARM64-based Systems 10.0.26200.0 < 10.0.26100.8875

Windows 11 version 26H1 ARM64-based Systems 10.0.28000.0 < 10.0.28000.2525

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:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.