CVE-2025-3935
Actively exploited. CVE-2025-3935 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-06-02) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
ConnectWise ScreenConnect contains an improper authentication vulnerability. This vulnerability could allow a ViewState code injection attack, which could allow remote code execution if machine keys are compromised.
CSIRTS triage
- What
- This vulnerability could allow a ViewState code injection attack, which could allow remote code execution if machine keys are compromised.
- Who is affected
- ConnectWise ScreenConnect is affected by this vulnerability.
- Urgency
- Remediation is urgent as exploitation is confirmed and the severity is critical.
- Action
- Update to the latest version to mitigate the vulnerability.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 87% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2025-3935: ConnectWise ScreenConnect Improper Authentication Vulnerabilitycisa-kev · 2025-06-02
External references
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