CVE-2025-3935
ViewState Injection in ScreenConnect Enables Remote Code Execution
Publication date: 2025-04-25
Last updated on: 2025-06-03
Assigner: 7d616e1a-3288-43b1-a0dd-0a65d3e70a49
Description
Description
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.
CVSS Scores
EPSS Scores
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| Percentile: |
Affected Vendors & Products
| Vendor | Product | Version |
|---|---|---|
| screenconnect | screenconnect | * |
| connectwise | screenconnect | to 25.2.4 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-287 | Improper Authentication |
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Meta Information
CVE Publication Date:
2025-04-25
CVE Last Modified Date:
2025-06-03
Report Generation Date:
2025-07-24
AI Powered Q&A Generation:
2025-04-26
EPSS Last Evaluated Date:
2025-07-02
NVD Report Link: