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ActiveX

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Sep 20, 2026 · Industry Insights

Edge IE Mode Countdown: Microsoft's 2029 Deadline Demands Immediate Legacy App Migration

Microsoft warns that Edge's IE mode support ends December 2029, urging enterprises to inventory legacy systems, evaluate modernization options, and start multi-year migration projects now to avoid security and compliance risks after support expires.

ActiveXApplication ModernizationBrowser Deprecation

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Edge IE Mode Countdown: Microsoft's 2029 Deadline Demands Immediate Legacy App Migration

21CTO

Sep 9, 2021 · Information Security

Critical IE Zero-Day (CVE‑2021‑40444) Exploited via Malicious Office Docs – What You Need to Know

Microsoft warned on September 8 that a critical IE zero‑day (CVE‑2021‑40444) is being actively exploited through specially crafted Office documents, allowing remote code execution via ActiveX, and urged users to disable IE ActiveX controls until a patch is released.

ActiveXCVE-2021-40444IE

0 likes · 3 min read

Critical IE Zero-Day (CVE‑2021‑40444) Exploited via Malicious Office Docs – What You Need to Know