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CVE-2026-58632 Microsoft CVE debrief

CVE-2026-58632 is a high-severity vulnerability in Windows Win32K that allows an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7.8 and is classified as HIGH. Microsoft has released a fix for this vulnerability. The vulnerability is a use-after-free issue in the Windows Win32K component. An authorized attacker can exploit this vulnerability to elevate privileges locally. System administrators and users of Windows 10, Windows 11, and Windows Server are advised to take action to mitigate this vulnerability.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-17
Advisory published
2026-07-14
Advisory updated
2026-07-17

Who should care

System administrators and users of Windows 10, Windows 11, and Windows Server are advised to take action to mitigate this vulnerability. The vulnerability has a high CVSS score and is classified as HIGH. It is essential to apply the Microsoft patch for CVE-2026-58632 and ensure that all Windows systems are up-to-date with the latest security patches.

Technical summary

The vulnerability is a use-after-free issue in the Windows Win32K component. An authorized attacker can exploit this vulnerability to elevate privileges locally. The vulnerability has been analyzed by the NVD and has a CVSS vector of CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The vulnerability has a CVSS score of 7.8 and is classified as HIGH.

Defensive priority

High

Recommended defensive actions

  • Apply the Microsoft patch for CVE-2026-58632
  • Ensure that all Windows systems are up-to-date with the latest security patches
  • Monitor system logs for suspicious activity
  • Implement additional security measures such as multi-factor authentication and least privilege access
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record was published on 2026-07-14T18:18:45.370Z and was last modified on 2026-07-17T02:28:38.813Z. The NVD entry is currently Analyzed. The vulnerability has been identified in Windows Win32K and has a CVSS score of 7.8. Microsoft has released a fix for this vulnerability. However, the specific details of the vulnerability and the affected systems are limited. Further verification is needed to confirm the affected scope and to apply the necessary patches.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-14T18:18:45.370Z and has not been modified since then. The NVD entry is currently Analyzed.