high severity · exploited in the wild · published 2026-02-10
An attacker who already runs code as a normal user can raise their rights to a much higher level and take over the PC. Attackers already use this flaw in the wild.
Fixed in: 10.0.28000.1575
CVE: CVE-2026-21533
Source: Microsoft (MSRC)
You are affected if the installed version is older than 10.0.28000.1575. Check the version you have and update to 10.0.28000.1575 or later. The fixed version is verified against a vendor or advisory source.
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 1575 and your operating system.