On April 8, 2025, Microsoft patched 121 vulnerabilities across its products, including CVE-2025-29824—the only one known to be exploited in the wild. This particular flaw enabled adversaries to escalate Windows privileges by leveraging a bug in the clfs.sys driver.
Microsoft Threat Intelligence discovered the issue during the Storm-2460 attacks targeting organizations in Saudi Arabia, Spain, Venezuela, and the United States. By exploiting CVE‑2025‑29824, the threat actor was able to escalate its privileges to NT AUTHORITY\SYSTEM to perform lateral movement and encrypt victims’ files.
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Source: BI.ZONE
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