CVE-2026-42978
Windows Push Notifications Elevation of Privilege Vulnerability
- Published
- Jun 9, 2026
- Updated
- Aug 25, 2026
- Assigning CNA
- microsoft
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:HLow · next 30 days
- Percentile
- 16.1%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Sources
5- CVE-2026-42978-PoC-ResearchResearch
CVE-2026-42978 — Use-After-Free race condition in Windows Push Notifications (WpnService). Patch diff, root cause analysis, TOCTOU lab, Sysmon/ETW detection rules.
- CVE-2026-42978-PoC-ResearchResearch
CVE-2026-42978 Windows Push Notifications (WpnService) Use-After-Free & Race Condition PoC research, diagnostic scanner, and security audit module for AI Security Tool.
Explore and validate CVE-2026-42978 PoC with an integrated AI security tool, multi-protocol terminal, and autonomous agent suite for Windows Push Notifications.
Responsible use
Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.