CVE-2025-3935
Essential information
- Published
- 02/06/2025 02:00
- Modified
- 21/12/2025 17:38
- Author
- Cybersecurity and Infrastructure Security Agency
- Creator
- Cybersecurity and Infrastructure Security Agency
- CVSS
- 8.1 HIGH (v3.1)
- CISA KEV
- Yes
- CWE
- —
- CVSS vector
-
—
CVSS:3.1/AV:N/C:H/I:H/A:H—
CVSS metrics
- Access vector
- —
- Access complexity
- —
- Authentication
- —
- Confidentiality impact
- —
- Integrity impact
- —
- Availability impact
- —
- Exploitability
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- Network
- Attack complexity
- HIGH
- Privileges required
- NONE
- User interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
- Exploit code maturity
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- —
- Attack complexity
- —
- Attack requirements
- —
- Privileges required
- —
- User interaction
- —
- Confidentiality (V)
- —
- Confidentiality (S)
- —
- Integrity (V)
- —
- Integrity (S)
- —
- Availability (V)
- —
- Availability (S)
- —
- Exploit maturity
- —
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.
NVD status
- Status
- Received — CVE has been recently published to the CVE List and has been received by the NVD.
- Source
- 7d616e1a-3288-43b1-a0dd-0a65d3e70a49
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| screenconnect / screenconnect | cpe:2.3:a:screenconnect:screenconnect:25.2.3:*:*:*:*:*:*:* |
| screenconnect / screenconnect | cpe:2.3:a:screenconnect:screenconnect:*:*:*:*:*:*:*:* |