CVE-2025-55696
published 2025-10-14CVE-2025-55696: Time-of-check time-of-use (toctou) race condition in NtQueryInformation Token function (ntifs.h) allows an authorized attacker to elevate privileges locally.
PriorityP434high7CVSS 3.1
AVLACHPRLUINSUCHIHAH
EPSS
0.21%
10.8th percentile
Time-of-check time-of-use (toctou) race condition in NtQueryInformation Token function (ntifs.h) allows an authorized attacker to elevate privileges locally.
Affected
33 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1809 | < 10.0.17763.7919 | 10.0.17763.7919 |
| microsoft | windows_10_21h2 | < 10.0.19044.6456 | 10.0.19044.6456 |
| microsoft | windows_10_22h2 | < 10.0.19045.6456 | 10.0.19045.6456 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7919 | 10.0.17763.7919 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.6456 | 10.0.19044.6456 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.6456 | 10.0.19045.6456 |
| microsoft | windows_11_22h2 | < 10.0.22621.6060 | 10.0.22621.6060 |
| microsoft | windows_11_23h2 | <= 10.0.22631.6060 | — |
| microsoft | windows_11_24h2 | < 10.0.26100.6899 | 10.0.26100.6899 |
| microsoft | windows_11_25h2 | < 10.0.26200.6899 | 10.0.26200.6899 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.6060 | 10.0.22621.6060 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.6060 | 10.0.22631.6060 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.6060 | 10.0.22631.6060 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.6899 | 10.0.26100.6899 |
| microsoft | windows_11_version_25h2 | >= 10.0.26200.0 < 10.0.26200.6899 | 10.0.26200.6899 |
| microsoft | windows_server_2019 | < 10.0.17763.7919 | 10.0.17763.7919 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.7919 | 10.0.17763.7919 |
| microsoft | windows_server_2022 | < 10.0.20348.4294 | 10.0.20348.4294 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.4294 | 10.0.20348.4294 |
| microsoft | windows_server_2022_23h2 | < 10.0.25398.1913 | 10.0.25398.1913 |
| microsoft | windows_server_2025 | <= 10.0.26100.6899 | — |
| microsoft | windows_server_2025 | >= 10.0.26100.0 < 10.0.26100.6899 | 10.0.26100.6899 |
| msrc | windows_10_version_1809 | — | — |
| msrc | windows_10_version_21h2 | — | — |
| msrc | windows_10_version_22h2 | — | — |
CVSS provenance
nvdv3.17.0HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_msrc7.8HIGH
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GHSA
GHSA-fc47-mqrj-q8w9: Time-of-check time-of-use (toctou) race condition in NtQueryInformation Token function (ntifs
ghsa_unreviewed·2025-10-14
CVE-2025-55696 [HIGH] CWE-367 GHSA-fc47-mqrj-q8w9: Time-of-check time-of-use (toctou) race condition in NtQueryInformation Token function (ntifs
Time-of-check time-of-use (toctou) race condition in NtQueryInformation Token function (ntifs.h) allows an authorized attacker to elevate privileges locally.
Microsoft
NtQueryInformation Token function (ntifs.h) Elevation of Privilege Vulnerability
vendor_msrc·2025-10-14·CVSS 7.8
CVE-2025-55696 [HIGH] CWE-367 NtQueryInformation Token function (ntifs.h) Elevation of Privilege Vulnerability
NtQueryInformation Token function (ntifs.h) Elevation of Privilege Vulnerability
Description: Time-of-check time-of-use (toctou) race condition in NtQueryInformation Token function (ntifs.h) allows an authorized attacker to elevate privileges locally.
FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
NtQueryInformation Token function (ntifs.h): NtQueryInformation Token function (ntifs.h)
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5066586
Refe
No detection rules found.
No public exploits indexed.
2025-10-14
Published