Is CVE-2026-58632 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-58632 being exploited in the wild.

How severe is CVE-2026-58632?

High severity, with a CVSS score of 7.8, published 14 July 2026.

Which products and versions are affected?

Microsoft Windows 11 24H2, 25H2, 26H1; Microsoft Windows 10 1607, 1809, 21H2, 22H2; Microsoft Windows Server 2016 All versions.

Is there a fix for CVE-2026-58632?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-58632 attacked?

It is attacked with local access, in an operating system.

Am I affected by CVE-2026-58632?

Check whether you run Microsoft Windows 11, Microsoft Windows 10 or Microsoft Windows Server 2016 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-58632: Microsoft Windows Win32K use after free privilege escalation

CVE-2026-58632 · Severity: high · CVSS 7.8 · Published 2026-07-14

A security vulnerability has been identified in the Windows kernel component responsible for managing graphics and windowing. An attacker who already has basic access to a computer could exploit this flaw to gain full administrative control over the system. This could allow them to view sensitive data, install malicious software, or disrupt business operations.

Technologies: Microsoft Windows 11, Microsoft Windows 10, Microsoft Windows Server 2016. Vendors: Microsoft.

Quick answers

Is CVE-2026-58632 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-58632 being exploited in the wild.
How severe is CVE-2026-58632?: High severity, with a CVSS score of 7.8, published 14 July 2026.
Which products and versions are affected?: Microsoft Windows 11 24H2, 25H2, 26H1; Microsoft Windows 10 1607, 1809, 21H2, 22H2; Microsoft Windows Server 2016 All versions.
Is there a fix for CVE-2026-58632?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-58632 attacked?: It is attacked with local access, in an operating system.
Am I affected by CVE-2026-58632?: Check whether you run Microsoft Windows 11, Microsoft Windows 10 or Microsoft Windows Server 2016 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability is a use-after-free (UAF) located in the Win32K kernel-mode driver (CWE-416). The flaw occurs when the system continues to use a memory pointer after it has been freed, which can be manipulated by a local attacker to execute arbitrary code in kernel mode. To exploit this, an attacker must first have the ability to execute code on the target system with low privileges. Successful exploitation grants the attacker SYSTEM-level privileges, effectively bypassing local security boundaries. Microsoft has released security updates to address this issue across affected versions of Windows and Windows Server.

Affected products

Microsoft Windows 10 1607, 1809, 21H2, 22H2
Microsoft Windows 11 24H2, 25H2, 26H1
Microsoft Windows Server 2016 All versions

Timeline

2026-07-14: disclosed
2026-07-14: advisory

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58632

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