VDB
GHSA-ch84-h92g-mw93
GHSA-ch84-h92g-mw93
PUBLISHED
Exploit Intelligence
- sentinel-aidefense/CVE-2026-21509 (github-poc-repo)
- sentinel-aidefense/CVE-2026-21509 (github-poc-repo)
- sentinel-aidefense/CVE-2026-21509 (github-poc)
- sentinel-aidefense/CVE-2026-21509 (github-poc)
- PowerShell script to check, apply, and test the Kill-Bit protection for the CVE-2026-21509 Microsoft Office zero-day vulnerability affecting Office 2016/2019/LTSC. (github-poc-repo)
- PowerShell script to check, apply, and test the Kill-Bit protection for the CVE-2026-21509 Microsoft Office zero-day vulnerability affecting Office 2016/2019/LTSC. (github-poc-repo)
- Microsoft just released emergency patches for CVE-2026-21509, a zero-day in the Office Suite that bypasses OLE/COM mitigations when a user simply opens a file. They think their "Service-side change" for Office 2021+ is a solid wall. (github-poc-repo)
- Microsoft just released emergency patches for CVE-2026-21509, a zero-day in the Office Suite that bypasses OLE/COM mitigations when a user simply opens a file. They think their "Service-side change" for Office 2021+ is a solid wall. (github-poc-repo)
- 2026-01-28.yml (github-poc)
- integration_test.go (github-poc)
…and 48 more exploits
Timeline
- CVE Published
- Jul 2, 2021 PoC Published
- Feb 4, 2026 PoC Published
- Feb 14, 2026 PoC Published
- Apr 1, 2026 PoC Published
- Apr 10, 2026 Security Advisory
- Apr 16, 2026 PoC Published