CVE-2026-41091

🛡️ CVE-2026-41091 - RedSun Microsoft Defender Elevation of Privilege Vulnerability RedSun is a local privilege escalation LPE technique and associated PoC abusing a link-following vulnerability in Microsoft Defender's Malware Protection Engine. It allows a low-privileged authenticated attacker to...

CVE-2026-50656

🚨 CVE-2026-50656 — Microsoft Defender "RoguePlanet" Elevation of Privilege Vulnerability in Microsoft Malware Protection Engine ⚠️ Educational and Defensive Security Research Only 📖 Overview CVE-2026-50656 is a high-severity Elevation of Privilege EoP vulnerability affecting the Microsoft Malware...

The vulnerability of the Microsoft Malware Protection Engine, a component of the Microsoft Defender antivirus protection tool, allows a malicious actor to gain unauthorized access to protected information.

The vulnerability of the Microsoft Malware Protection Engine, a component of the Microsoft Defender antivirus protection tool, relates to an improper definition of symbolic links before accessing a file. Exploiting this vulnerability could allow an attacker to gain unauthorized access to protecte...

Researcher Drops New Microsoft Defender PoC Showing ShieldBreak Patch Can Be Bypassed

The security researcher known as Chaotic Eclipse has dropped a proof-of-concept PoC for yet another zero-day in Microsoft Defender. The vulnerability, codenamed ShieldCrash , is assessed to be a patch bypass for CVE-2026-69414 CVSS score: 7.8, also called ShieldBreak, which the researcher reporte...

PT-2026-90531

Уязвимость модуля защиты от вредоносных программ Microsoft Malware Protection Engine средства антивирусной защиты Microsoft Defender связана с некорректным определением символических ссылок перед доступом к файлу. Эксплуатация уязвимости может позволить нарушителю получить несанкционированный...

CVE-2026-69414 ShieldBreak Zero-Day: No Patch, and CISA BOD 26-04 Gives You 14 Days

Executive Summary ShieldBreak CVE-2026-69414 is a zero-day elevation-of-privilege vulnerability in the Microsoft Malware Protection Engine used by Microsoft Defender, allowing a low-privilege local attacker to escalate to SYSTEM. A public PoC was released on August 12, 2026, and Microsoft assigne...

EUVD-2026-58811

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...

CVE-2026-69414

Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak "...

CVE-2026-69414

Technical details (affected product/component/version/root cause/impact/fix) are not publicly provided in the connected documents. Monitor for updates once Microsoft and others publish concrete information about CVE-2026-69414.

CVE-2026-69414

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...

Microsoft Defender Elevation of Privilege Vulnerability

Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak "...

PT-2026-72125

Name of the Vulnerable Software and Affected Versions Microsoft Defender affected versions not specified Description An elevation of privilege exists in the Microsoft Malware Protection Engine in Microsoft Defender, publicly referred to as "ShieldBreak". Recommendations At the moment, there is no...

CVE-2026-69414: Improper Access Control

Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak "...

The vulnerability of the Microsoft Malware Protection Engine of the Windows Defender security software allows a malicious actor to expose protected information and gain full control over the device.

The vulnerability of the Microsoft Malware Protection Engine in Microsoft’s Windows operating systems is related to synchronization errors when using shared resources. Exploiting this vulnerability can allow attackers to expose protected information and gain full control over the device...

PT-2026-72135

Уязвимость движка Microsoft Malware Protection Engine Защитника Microsoft Windows Defender операционных систем Windows связана с ошибками синхронизации при использовании общего ресурса. Эксплуатация уязвимости может позволить нарушителю раскрыть защищаемую информацию и получить полный контроль на...

Windows Defender <= 1.1.26050.11 Elevation of Privilege (RoguePlanet) (CVE-2026-50656)

The Malware Protection Engine version of Microsoft Windows Defender installed on the remote Windows host is prior to or equal to 1.1.26050.11. It is, therefore, affected by an elevation of privilege vulnerability: - Improper link resolution before file access 'link following' in Microsoft Defende...

Microsoft fixes RoguePlanet zero-day in Defender

Microsoft issued a security update that fixes the zero-day vulnerability known as RoguePlanet in Microsoft Defender. RoguePlanet is tracked as CVE-2026-50656, a Microsoft Defender elevation of privilege EoP vulnerability. As we reported last month, if successfully exploited, RoguePlanet can allow...

Microsoft Patches RoguePlanet Defender Flaw That Can Grant SYSTEM Privileges

Microsoft has released security updates for a Defender vulnerability known as RoguePlanet, nearly a month after details of the flaw became public. The vulnerability, tracked as CVE-2026-50656 CVSS score: 7.8, is a privilege escalation issue in the Microsoft Malware Protection Engine "mpengine.dll...

Microsoft Confirms RoguePlanet Defender Zero-Day, Says Patch is in Development

Microsoft has formally disclosed that it's working to release a patch to address a Defender zero-day codenamed RoguePlanet. The vulnerability has now been assigned the CVE identifier CVE-2026-50656 CVSS score: 7.8, with the tech giant describing it as a privilege escalation flaw. "Microsoft is...

Microsoft Confirms RoguePlanet Defender Zero-Day, Says Patch is in Development

Microsoft has formally disclosed that it's working to release a patch to address a Defender zero-day codenamed RoguePlanet. The vulnerability has now been assigned the CVE identifier CVE-2026-50656 CVSS score: 7.8, with the tech giant describing it as a privilege escalation flaw. "Microsoft is...