Vulnerability · Published Oct 14, 2025 · Assigned by microsoft
CVE-2025-55696NtQueryInformation Token function (ntifs.h) Elevation of Privilege Vulnerability
High 7.8
In plain English
A high-severity security flaw in Windows 10 Version 1809 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 86.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Time-of-check time-of-use (toctou) race condition in NtQueryInformation Token function (ntifs.h) allows an authorized attacker to elevate privileges locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – before 10.0.17763.7919 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – before 10.0.19044.6456 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – before 10.0.19045.6456 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – before 10.0.22621.6060 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – before 10.0.22631.6060 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – before 10.0.22631.6060 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – before 10.0.26100.6899 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – before 10.0.26200.6899 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before 10.0.17763.7919 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – before 10.0.17763.7919 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.4294 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – before 10.0.25398.1913 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – before 10.0.26100.6899 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – before 10.0.26100.6899 |
Weakness: CWE-367, CWE-822 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- NtQueryInformation Token function (ntifs.h) Elevation of Privilege Vulnerability vendor-advisory, patch