EUVD-2026-12574
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
3Description
A condition in ScreenConnect may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios.
Analysis
A cryptographic authentication bypass vulnerability in ConnectWise ScreenConnect allows remote attackers who gain access to server-level cryptographic material to authenticate as any user and obtain elevated privileges. The vulnerability affects all ScreenConnect versions prior to 26.1 and carries a CVSS score of 9.0, indicating critical severity. …
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Remediation
Within 24 hours: Inventory all ScreenConnect installations and versions; restrict network access to ScreenConnect servers to only essential administrative personnel using firewall rules; enable enhanced logging on all ScreenConnect instances. Within 7 days: Implement network segmentation isolating ScreenConnect from critical infrastructure; rotate all cryptographic material and administrative credentials; consider disabling remote access features if operationally feasible. …
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External POC / Exploit Code
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