CVE-2025-3935 in connectwise screenconnect
The LogPulse agent checks every host for the vulnerable version of this software, so you see where the CVE is present.
What the vulnerability is
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 remote code execution on the server. The risk does not originate from a vulnerability introduced by ScreenConnect, but from platform level behavior. This had no direct impact to ScreenConnect Client. ScreenConnect 2025.4 patch disables ViewState and removes any dependency on it.
Affected software: connectwise screenconnect
Scores
- CVSS: 7.2 (high)
- EPSS: 3.60% chance of exploitation in the next 30 days
- CISA KEV: Known exploited, listed 2025-06-02
- Published: 2025-04-25
What LogPulse has for it
- Detection rule: No
- Agent check (vulnerable version): Yes, published
- Mitigation: No
Source data: NIST NVD, CISA KEV and FIRST EPSS. LogPulse processes new CVEs every hour.
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