gavz/CVE-2026-21509-PoC

PoC

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.

view exploit source poc_in_githubauthor gavzpublished 2026-01-29catalog poc_in_github
01

exploited CVEs (1)

Known CVEs related to this entry.

IDseverity exploitable
CVE-2026-21509US—OT criticalKEV
Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally.
scry

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