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CVE-2026-21509 PoC — Microsoft Office Security Feature Bypass Vulnerability

Source
https://github.com/gavz/CVE-2026-21509-PoC
Associated Vulnerability
Title:Microsoft Office Security Feature Bypass Vulnerability (CVE-2026-21509)
Description:Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally.
Description
Educational PoC for CVE‑2026‑21509 (Microsoft Office security feature bypass). Generates a harmless DOCX with dummy OLE artifacts to study EDR/AV visibility. Not an exploit. For isolated labs only; see README for 7‑Zip inspection steps and mitigation references.
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