api exploitation

About this tag
The api exploitation tag on WindowsForum.com covers security vulnerabilities that involve abusing application programming interfaces in Microsoft products. Discussions include privilege escalation in Microsoft Entra ID via API weaknesses, a Local File Inclusion flaw in Microsoft 365's PDF export API, and tools like Defendnot that exploit Windows Security Center APIs to disable Microsoft Defender. Another thread examines input validation failures in Microsoft Bookings APIs that enable phishing and resource exhaustion attacks. These threads highlight how undocumented API behaviors, insufficient input validation, and improper access controls create attack surfaces in enterprise cloud services and security software. The content focuses on real-world exploits, patching responses, and implications for IT administrators and security professionals.
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    Critical Microsoft Entra ID Vulnerability Allows Privilege Escalation to Global Admins

    Security researchers have recently identified a critical vulnerability within Microsoft Entra ID, formerly known as Azure Active Directory, that enables attackers to escalate their privileges to Global Administrator status. This flaw poses a significant threat to organizations relying on...
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    Critical Microsoft 365 PDF Export Vulnerability Highlights SaaS Security Challenges

    Recent revelations surrounding a critical Local File Inclusion (LFI) vulnerability in Microsoft 365’s Export to PDF functionality have cast an intense spotlight on the hidden complexities and lingering security risks inherent even in feature-rich, enterprise-grade cloud platforms. The...
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    How Defendnot Bypasses Windows Defender: Unveiling the Vulnerability in Windows Security Center

    Disabling Windows Defender has never been considered a best practice, yet it persists as a fringe pursuit among power users, malware developers, and those who simply want full control over their PC’s security configuration. Recently, a new tool named Defendnot, created by developer and reverse...
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    How 'Defendnot' Exploits Windows Defender: A Hidden Threat to Windows Security

    Windows users have always relied on Microsoft Defender as a silent, ever-vigilant line of defense against malware, but a new research tool dubbed ‘Defendnot’ has exposed a startling vulnerability in this trust. This article delves into how Defendnot tricks Windows into disabling Microsoft...
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    Microsoft Bookings Vulnerability: How Input Validation Flaws Expose Organizations to Cyberattacks

    A quiet yet consequential security flaw recently put Microsoft 365 customers on high alert after researchers disclosed a vulnerability within Microsoft Bookings that exposed organizations to sophisticated cyberattacks through manipulated meeting invitations and calendar events. At the heart of...
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