Huntress says attackers used a ScreenConnect extension to plant rogue remote access on 288 computers
Attackers used cloud-hosted ConnectWise ScreenConnect remote access panels on November 11, 2026, to install rogue ScreenConnect clients and a malicious toolkit called SCKit on at least 288 computers at 48 organizations, security firm Huntress reported. Huntress linked the activity to RMM+, a third-party ScreenConnect extension whose versions 1.0.31 and 1.0.32 accepted a blank access key. ConnectWise disabled RMM+ and four related extensions in about 400 partner environments and said it had found no vulnerability in ScreenConnect itself.