Race Condition Vulnerability in Windows Push Notifications by Microsoft
CVE-2026-42979

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows 10 Version 21h2
Windows 10 Version 22h2
Windows 11 Version 23h2
Vendor
CVE Published:
9 June 2026

What is CVE-2026-42979?

A race condition vulnerability in Windows Push Notifications enables authorized attackers to exploit improper synchronization when executing concurrent processes. This flaw could allow attackers to elevate their privileges locally, impacting the system's security and integrity. Users are advised to update their systems to mitigate potential risks associated with this vulnerability.

Affected Version(s)

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.8880

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7417

Windows 10 Version 22H2 32-bit Systems 10.0.19045.0 < 10.0.19045.7417

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:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.