Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2024-1709

ConnectWise ScreenConnect Authentication Bypass Vulnerability

CriticalExploitation confirmedCISA KEV Used by ransomware
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run ScreenConnect, fix it now.

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

US federal civilian agencies must remediate by Feb 29, 2024.

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

Description

ConnectWise ScreenConnect 23.9.7 and prior are affected by an Authentication Bypass Using an Alternate Path or Channel vulnerability, which may allow an attacker direct access to confidential information or critical systems.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorAffected versionsFixed inSource
ScreenConnectConnectWise< 23.9.823.9.8KEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2024-1709 scored CVSS 10.0: ConnectWise ScreenConnect, ConnectWise ScreenConnect Authentication Bypass Vulnerability

    CISA lists this as exploited in the wild and known to be used in ransomware campaigns. Unpatched ScreenConnect systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdateKEV

    Patch released for CVE-2024-1709: ConnectWise ScreenConnect, ConnectWise ScreenConnect Authentication Bypass Vulnerability

    An official fix is now available for ConnectWise ScreenConnect. This vulnerability is being exploited, so apply it promptly.

    Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • connectwise.com https://www.connectwise.com/company/trust/security-bulletins/connectwise-screenconnect-23.9.8
  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2024-1709
  • github.com https://github.com/rapid7/metasploit-framework/pull/18870
  • github.com https://github.com/watchtowrlabs/connectwise-screenconnect_auth-bypass-add-user-poc
  • techcrunch.com https://techcrunch.com/2024/02/21/researchers-warn-high-risk-connectwise-flaw-under-attack-is-embarrassingly-e…
  • bleepingcomputer.com https://www.bleepingcomputer.com/news/security/connectwise-urges-screenconnect-admins-to-patch-critical-rce-fl…
  • horizon3.ai https://www.horizon3.ai/attack-research/red-team/connectwise-screenconnect-auth-bypass-deep-dive/
  • huntress.com https://www.huntress.com/blog/a-catastrophe-for-control-understanding-the-screenconnect-authentication-bypass
  • huntress.com https://www.huntress.com/blog/detection-guidance-for-connectwise-cwe-288-2
  • huntress.com https://www.huntress.com/blog/vulnerability-reproduced-immediately-patch-screenconnect-23-9-8
  • securityweek.com https://www.securityweek.com/connectwise-confirms-screenconnect-flaw-under-active-exploitation/
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1709