Desktop Window Manager info leak actively exploited (CVE-2026-20805)

medium severity · exploited in the wild · published 2026-01-13

An attacker can read sensitive information from Desktop Window Manager memory on the local machine. This vulnerability has been exploited in the wild.

Fixed in: 10.0.26200.7623

CVE: CVE-2026-20805

Source: Microsoft (MSRC)

Am I affected?

You are affected if the installed version is older than 10.0.26200.7623. Check the version you have and update to 10.0.26200.7623 or later. The fixed version is verified against a vendor or advisory source.

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 1580 and your operating system.