Use After Free Vulnerability in Windows DWM Core Library by Microsoft
CVE-2026-62888

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 21h2
Windows 10 Version 22h2
Windows 11 Version 23h2
Windows 11 Version 23h2
Vendor
CVE Published:
11 August 2026

What is CVE-2026-62888?

A vulnerability in the Windows DWM Core Library allows authorized attackers to exploit a use after free condition, potentially enabling them to escalate their privileges locally. By gaining higher access levels, attackers may perform unauthorized actions on the affected Windows operating systems, compromising the integrity and confidentiality of the system. Mitigation steps should be employed to protect against such security risks.

Affected Version(s)

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7663

Windows 10 Version 22H2 32-bit Systems 10.0.19045.0 < 10.0.19045.7663

Windows 11 version 23H2 ARM64-based Systems 10.0.22631.0 < 10.0.22631.7517

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.