Microsoft Windows Kernel buffer overflow

Summaryinfo

A vulnerability labeled as problematic has been found in Microsoft Windows. The affected element is an unknown function of the component Kernel. The manipulation results in buffer overflow. This vulnerability is cataloged as CVE-2026-119857. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Microsoft Windows (the affected version unknown). Affected is an unknown part of the component Kernel. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer. This is going to have an impact on confidentiality.

This vulnerability is traded as CVE-2026-119857. The exploitability is told to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 11/10/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Vendor

• Microsoft

Name

• Windows

License

• commercial

Website

• Vendor: https://www.microsoft.com/
• Product: https://www.microsoft.com/en-us/windows

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