All vulnerabilities
CVE-2025-3935

ConnectWise ScreenConnect Improper Authentication Vulnerability

ConnectWise ScreenConnectApplications & CMS
Open in ThreatlineRecord JSON
CVSS
8.1High
ExploitationExploited in the wildAdded to KEV 2 Jun 2025CISA KEV
Exploit odds (EPSS)3.54%Chance of exploitation activity in the next 30 days, higher than 89% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline23 Jun 2025Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 25 Apr 2025, 18:27 UTCPublishedCVE List
  2. 2 Jun 2025Added to CISA KEVCISA KEV

Description

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.

Text from CVE List

Affected versions 1

  • ScreenConnectaffected: <25.2.3CVE List

References 4