Microsoft Defender for Endpoint prior 4.18.26060.3008 out-of-bounds

Summaryinfo

A vulnerability classified as problematic has been found in Microsoft Defender for Endpoint. This affects an unknown function. The manipulation leads to out-of-bounds. This vulnerability is documented as CVE-2026-105726. The attack needs to be performed locally. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Microsoft Defender for Endpoint. This issue affects some unknown processing. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. The summary by CVE is:

Out-of-bounds read in Microsoft Defender allows an authorized attacker to disclose information locally.

It is possible to read the advisory at msrc.microsoft.com. The identification of this vulnerability is CVE-2026-105726 since 10/05/2026. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 4.18.26060.3008 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Microsoft

Name

• Defender for Endpoint

License

• commercial

Website

• Vendor: https://www.microsoft.com/

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