Skype for Business Server privilege elevation flaw exploited

medium severity · exploited in the wild · published 2023-10-10

An attacker on the network can gain higher privileges on a Skype for Business Server than they should have. This flaw is being exploited in the wild, so an exposed server is a live target.

Fixed in: 6.0.9319.869, 7.0.246.530

CVE: CVE-2023-41763

Source: Microsoft (MSRC)

Am I affected?

You are affected if the installed version is older than the fixed version of its release line: 6.0.9319.869, 7.0.246.530. Check the version you have and update to the fixed version of your line or later. The fixed versions are 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 1514 and your operating system.