Microsoft Windows Terminal integer overflow

Summaryinfo

A vulnerability categorized as very critical has been discovered in Microsoft Windows. This impacts an unknown function of the component Terminal. The manipulation results in integer overflow. This vulnerability is cataloged as CVE-2026-59117. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as very critical has been found in Microsoft Windows (affected version unknown). Affected is an unknown functionality of the component Terminal. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Integer overflow or wraparound in Windows Terminal allows an unauthorized attacker to execute code over a network.

The advisory is available at msrc.microsoft.com. This vulnerability is traded as CVE-2026-59117 since 07/02/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $25k-$100k at the moment (estimation calculated on 07/17/2026).

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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