VDB
CVE-2026-26167
CVE-2026-26167
PUBLISHED
CVSS 8.8 HIGH
Windows Push Notifications Elevation of Privilege Vulnerability
Reported by microsoft · Published April 14, 2026
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Risk scores
CVSS 3.1
8.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 |
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 |
| microsoft | windows_server_2025 | 10.0.26100.0 |
…and 28 more
Timeline
- Apr 14, 2026 CVE Published
- Apr 14, 2026 PoC Published
- Apr 15, 2026 Security Advisory (137 in total, the first dated here)
- May 18, 2026 EPSS Score (29 in total, the first dated here)
- Jul 3, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-26167
vulnetix vdb fixes CVE-2026-26167Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-26167/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- Windows Push Notifications Elevation of Privilege Vulnerability vendor-advisorypatch