SB2025053040 - Remote code execution in ConnectWise ScreenConnect



SB2025053040 - Remote code execution in ConnectWise ScreenConnect

Published: May 30, 2025

Security Bulletin ID SB2025053040
Severity
Critical
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Code Injection (CVE-ID: CVE-2025-3935)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation when handling ViewState data. A remote attacker can send a specially crafted HTTP request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.