PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-45606 Microsoft CVE debrief

CVE-2026-45606 is a medium-severity vulnerability in the Microsoft UxTheme Library (uxtheme.dll). An authorized attacker can exploit this out-of-bounds read vulnerability to deny service locally. The vulnerability has a CVSS score of 5.5 and was published on 2026-06-09.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-11
Advisory published
2026-06-09
Advisory updated
2026-06-11

Who should care

Administrators and users of Microsoft Windows operating systems, particularly those using Windows 10, Windows 11, and Windows Server versions.

Technical summary

The vulnerability is caused by an out-of-bounds read in the Microsoft UxTheme Library (uxtheme.dll). This allows an authorized attacker to deny service locally. The vulnerability is classified under CWE-125.

Defensive priority

Medium

Recommended defensive actions

  • Apply patches from Microsoft as they become available.
  • Refer to https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45606 for vendor advisory and mitigation guidance.

Evidence notes

The CVE record and details are sourced from official databases.

Official resources

CVE-2026-45606 was published on 2026-06-09 and modified on 2026-06-11.