Vulnerability · Published Jun 9, 2026 · Assigned by microsoft
CVE-2026-48566Windows DWM Core Library Information Disclosure Vulnerability
Medium 5.5
In plain English
A medium-severity out-of-bounds read in Windows 11 Version 24H2 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.4%top 67.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – before 10.0.26100.8457 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – before 10.0.26200.8457 |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 – before 10.0.28000.2113 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – before 10.0.26100.32860 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – before 10.0.26100.32860 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
References
- Windows DWM Core Library Information Disclosure Vulnerability vendor-advisory, patch