Microsoft Malware Protection Engine privileges management

Summaryinfo

A vulnerability labeled as very critical has been found in Microsoft Malware Protection Engine. This affects an unknown function. Such manipulation leads to privileges management. This vulnerability is traded as CVE-2026-69414. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Microsoft Malware Protection Engine (the affected version unknown). Affected by this issue is an unknown part. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak ". We are working to provide a high quality security update that addresses this vulnerability. We will provide information in this CVE when the update is available.

The advisory is available at msrc.microsoft.com. This vulnerability is handled as CVE-2026-69414 since 08/03/2026. The exploitation is known to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/15/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

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

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Productinfo

Type

• Anti-Malware Software

Vendor

• Microsoft

Name

• Malware Protection Engine

License

• commercial

Website

• Vendor: https://www.microsoft.com/

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