Microsoft’s December Patch Parade: Zero-Day Exploits Keep Sysadmins on High Alert!
Microsoft patched an actively exploited zero-day vulnerability in its monthly security update. CVE-2025-62221, an elevation of privilege bug in the Windows Cloud Files Mini Filter Driver, allows low-privileged users to achieve system-level code execution. Threat actors likely have the knowledge, and the real chaos begins when they chain it with other weaknesses.
Hot Take:
Microsoft’s latest patch update is like a holiday gift basket, but instead of chocolates and cheese, it’s filled with zero-days and elevation-of-privilege bugs. Nothing says ‘Happy Holidays’ quite like a kernel-mode use-after-free flaw!
Key Points:
– Microsoft patched actively exploited zero-day vulnerabilities, including CVE-2025-62221, an elevation-of-privilege bug.
– CVE-2025-62221 could allow attackers to achieve system-level code execution by exploiting a kernel-mode use-after-free flaw.
– Two other zero-days were patched, impacting PowerShell and GitHub Copilot for Jetbrains.
– December’s Patch Tuesday included 19 RCE vulnerabilities and 28 EoP flaws.
– Ivanti also joined the festive chaos with a high-severity stored XSS flaw in its Endpoint Manager.