high severity · exploited in the wild · published 2026-02-10
An attacker can escalate from a normal user account to full system control. This vulnerability is already being exploited in real attacks to take over Windows machines.
Fixed in: 10.0.28000.1575
CVE: CVE-2026-21519
Source: Microsoft (MSRC)
Fixlane has a reviewed fix procedure for this incident: a read-only check first, then the fix. Ask the Telegram bot, or connect an AI agent to the Fixlane MCP server and call get_fix_prompt with incident id 1574 and your operating system.