Originally published at: December Patch Tuesday 2025: A Month of AI Upgrades, UX Polish — and a Quiet Fix to a Long-Running Windows Shortcut Flaw - ToolsLib Blog
As 2025 draws to a close, Microsoft delivers a December Patch Tuesday that feels both familiar and surprising. Familiar, because we once again see Windows 11 gaining incremental improvements in design, security, and AI. Surprising, because one of the most interesting fixes of the month is a vulnerability Microsoft previously insisted wasn’t worth patching — yet quietly corrected in the background. This month’s updates revolve around three main topics: the KB5070311 preview update, the critical servicing stack refresh (KB5071142), and the silent fix of the LNK shortcut vulnerability (CVE-2025-9491) that’s been abused for years by state-sponsored attackers. Let’s break down what changed, why it matters, and what ToolsLib readers should pay attention to. A Closer Look at KB5070311: Visual Polish…