CVE-2026-84869 ConnectWise ScreenConnect: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Sep 14, 2026
What to do
- Install ConnectWise's security update for ScreenConnect. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability
- Product
- ConnectWise ScreenConnect
- CISA description
- 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.
- Type of flaw
- Login or permission bypass (CWE-269, CWE-862)
- Confirmed exploited
- Sep 11, 2026
- US federal patch deadline
- Sep 14, 2026
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Answering about CVE-2026-84869 ·
Questions about CVE-2026-84869
Is CVE-2026-84869 being exploited?
Yes. CISA added CVE-2026-84869 to its Known Exploited Vulnerabilities catalog on Sep 11, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2026-84869?
Install ConnectWise's security update for ScreenConnect. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2026-84869?
Only if you use ConnectWise ScreenConnect. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.