SimoesCTT/CTT-MICROSOFT-OFFICE-OLE-MANIFOLD-BYPASS-CVE-2026-21509
PoCCVE-2026-21509 is a critical bypass in the Microsoft Office OLE (Object Linking and Embedding) validation engine. While standard "laminar" exploits attempt to manipulate static COM objects, this repository utilizes Theorem 4.2 to achieve a speculative race-condition bypass of the Object Definition Rule (ODR).
01
exploited CVEs (1)
Known CVEs related to this entry.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-21509US | —OT critical | KEV | ||
Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally. | ||||
scry
Working exploits like this target internet-facing systems. See what is exposed on your perimeter with a free passive scan.
Free scan