CVE-2025-3935

ConnectWise ScreenConnect Improper Authentication Vulnerability

Screenconnect

ScreenConnect versions 25.2.3 and earlier versions may be susceptible to a ViewState code injection attack. ASP.NET Web Forms use ViewState to preserve page and control state, with data encoded using Base64 protected by machine keys. It is important to note that to obtain these machine keys, privileged system level access must be obtained. If these machine keys are compromised, attackers could create and send a malicious ViewState to the website, potentially leading to…

25. Apr 2025

Ausgewertete Quellen

• Hersteller
  https://www.connectwise.com/company/trust/advisories
• Hersteller
  https://www.connectwise.com/company/trust/security-bulletins/screenconnect-security-patch-2025.4
• CISA
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3935
• CISA
  ConnectWise ScreenConnect Improper Authentication Vulnerability
• NVD
  CVE-2025-3935