Exploit for Reliance on Untrusted Inputs in a Security Decision in Microsoft

CVE-2026-21509-PoC Educational PoC for CVE‑2026‑21509...

Exploit for CVE-2026-21509

🛡️ CVE-2026-21509 — Microsoft Office Zero-Day !OFFICEhttps...

Microsoft Office Zero-Day (CVE-2026-21509) - Emergency Patch Issued for Active Exploitation

Microsoft on Monday issued out-of-band security patches for a high-severity Microsoft Office zero-day vulnerability exploited in attacks. The vulnerability, tracked as CVE-2026-21509 , carries a CVSS score of 7.8 out of 10.0. It has been described as a security feature bypass in Microsoft Office...

CVE-2026-21509

Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally...

EUVD-2026-4666

Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally...

Microsoft Office Security Feature Bypass Vulnerability

Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally...

Microsoft Office Security Feature Bypass Vulnerability

Microsoft Office contains a security feature bypass vulnerability in which reliance on untrusted inputs in a security decision in Microsoft Office could allow an unauthorized attacker to bypass a security feature locally. Some of the impacted products could be end-of-life EoL and/or end-of-servic...

VulnCheck KEV: CVE-2026-21509

Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally...

PT-2026-4775

Name of the Vulnerable Software and Affected Versions Microsoft Office 2016 Microsoft Office 2019 Microsoft Office LTSC 2021 Microsoft Office LTSC 2024 Microsoft 365 Apps for Enterprise Description Microsoft Office contains a flaw where the application relies on untrusted inputs when making...

MiracleLinux 9 : dotnet8.0-8.0.121-1.el9_6.ML.1 (AXSA:2025-10999:22)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-10999:22 advisory. dotnet: .NET Information Disclosure Vulnerability CVE-2025-55248 dotnet: .NET Security Feature Bypass Vulnerability CVE-2025-55315 dotnet: .NET...

CVE-2026-21223

Improper privilege management in Microsoft Edge Chromium-based allows an authorized attacker to bypass a security feature locally...

CVE-2026-21223

CVE-2026-21223 affects Microsoft Edge (Chromium-based) via the Edge Elevation Service. The vulnerability is a design flaw in a privileged COM interface (IElevatorEdge) that does not properly validate the caller’s privileges, enabling a standard local user to invoke LaunchUpdateCmdElevatedAndWait ...

CVE-2026-21223 Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

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Security Updates for Microsoft Excel Products C2R (January 2026)

The Microsoft Excel Products are missing a security update. It is, therefore, affected by the following vulnerabilities: - Multiple remote code execution vulnerabilities that attackers can exploit to bypass authentication and execute unauthorized arbitrary commands. CVE-2026-20946, CVE-2026-20950...

CVE-2026-20949

Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally...

CVE-2026-20824

Protection mechanism failure in Windows Remote Assistance allows an unauthorized attacker to bypass a security feature locally...

CVE-2026-20949

Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally...

CVE-2026-20824 Windows Remote Assistance Security Feature Bypass Vulnerability

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CVE-2026-20824 Windows Remote Assistance Security Feature Bypass Vulnerability

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CVE-2026-20824

CVE-2026-20824 is a Windows Remote Assistance vulnerability described as a protection mechanism failure that enables a local attacker to circumvent a security measure. It is listed with a local attack vector, requiring user interaction, and a high confidentiality impact. Connected sources identif...