On CISA’s exploited listConnectWise ScreenConnectRemote access & IT tools
ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability
- What it is
- ConnectWise ScreenConnect contains both an improper privilege management and missing authorization vulnerability that may allow an attacker to transfer and execute files through an active remote session without authorization or host confirmation.
- Who's affected
- Anyone using ConnectWise ScreenConnect.
- Under attack?
- Yes. CISA added this to its catalog of actively exploited vulnerabilities on Sep 11, 2026.
- What to do
- Install the vendor's security update. If there isn't one yet, apply the vendor's workaround, or stop using the product until it's fixed. CISA lists this as actively exploited, so treat it as urgent.
- Fixed in
- See the vendor's advisory
- CISA deadline
- Federal agencies must fix this by Sep 14, 2026. Everyone else should treat that as a ceiling, not a target.
- CISA's instruction
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
ConnectWise scorecard: every exploited ConnectWise flaw →
Client notice ready to send
Fill in the bracketed parts, then paste into an email to your clients or team.