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5.5

Windows DWM Core Library: Unauthorized Local Data Disclosure

CVE-2026-44814 · published 4 months ago
Summary

An attacker with authorized access can use a Windows DWM Core Library flaw to access and disclose sensitive information on a local system. This vulnerability affects Windows systems and requires a malicious actor to be already logged in to exploit it. To protect your system, ensure you have the latest Windows updates installed.

What to do
  • Update microsoft windows_11_26h1 to version 10.0.28000.2269 or later.
  • Update microsoft windows 11 version 26h1 to version 10.0.28000.2269 or later.
Affected software
VendorProductAffected versions
microsoft windows_11_26h1 < 10.0.28000.2269
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
microsoft windows 11 version 26h1 < 10.0.28000.2269
Original advisory text
Windows DWM Core Library Information Disclosure Vulnerability
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
5.5 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-122Heap-based Buffer Overflow
CWE-125Out-of-bounds Read
Timeline
Published9 Jun 2026
Updated4 Nov 2026
First seen12 Jun 2026
Sources
CVE-2026-44814 · NVD
CVE-2026-44814 · MITRE
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