Windows ALPC: privilege escalation (CVE-2023-21674)

high severity · exploited in the wild · published 2023-01-10

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: 10.0.22621.1105

CVE: CVE-2023-21674

Source: Microsoft (MSRC)

Get the fix

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 1500 and your operating system.