CVE-2025-55696
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-10-14
Last updated on: 2025-10-30
Assigner: Microsoft Corporation
Description
Description
Time-of-check time-of-use (toctou) race condition in NtQueryInformation Token function (ntifs.h) allows an authorized attacker to elevate privileges locally.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | windows_10_1809 | to 10.0.17763.7919 (exc) |
| microsoft | windows_10_1809 | to 10.0.17763.7919 (exc) |
| microsoft | windows_10_21h2 | to 10.0.19044.6456 (exc) |
| microsoft | windows_10_22h2 | to 10.0.19045.6456 (exc) |
| microsoft | windows_11_22h2 | to 10.0.22621.6060 (exc) |
| microsoft | windows_11_23h2 | to 10.0.22631.6060 (inc) |
| microsoft | windows_11_24h2 | to 10.0.26100.6899 (exc) |
| microsoft | windows_11_25h2 | to 10.0.26200.6899 (exc) |
| microsoft | windows_server_2019 | to 10.0.17763.7919 (exc) |
| microsoft | windows_server_2022 | to 10.0.20348.4294 (exc) |
| microsoft | windows_server_2022_23h2 | to 10.0.25398.1913 (exc) |
| microsoft | windows_server_2025 | to 10.0.26100.6899 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-367 | The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. |
| CWE-822 | The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a time-of-check time-of-use (TOCTOU) race condition in the NtQueryInformation Token function (ntifs.h) that allows an authorized attacker to locally elevate their privileges.
How can this vulnerability impact me? :
An attacker who is already authorized on the system can exploit this vulnerability to gain higher privileges than intended, potentially allowing them to perform unauthorized actions or access sensitive information.
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