CVE-2024-1709
KEVRansomware UseConnectWise ScreenConnect Authentication Bypass Vulnerability
Description
ConnectWise ScreenConnect contains an authentication bypass vulnerability that allows an attacker with network access to the management interface to create a new, administrator-level account on affected devices.
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.
CVSS 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HPublishedFeb 21, 2024
Last modifiedJun 17, 2026
Added to KEVFeb 22, 2024
Remediation dueFeb 29, 2024
References
- github.com/rapid7/metasploit-framework/pull/18870Issue TrackingPatch
- github.com/watchtowrlabs/connectwise-screenconnect_auth-bypass-add-user-pocExploitThird Party Advisory
- techcrunch.com/2024/02/21/researchers-warn-high-risk-connectwise-flaw-under-attack-is-embarrassingly-easy-to-exploit/Press/Media CoverageThird Party Advisory
- bleepingcomputer.com/news/security/connectwise-urges-screenconnect-admins-to-patch-critical-rce-flaw/Press/Media CoverageThird Party Advisory
- connectwise.com/company/trust/security-bulletins/connectwise-screenconnect-23.9.8Vendor Advisory
- horizon3.ai/attack-research/red-team/connectwise-screenconnect-auth-bypass-deep-dive/Third Party Advisory
- huntress.com/blog/a-catastrophe-for-control-understanding-the-screenconnect-authentication-bypassExploitThird Party Advisory
- huntress.com/blog/detection-guidance-for-connectwise-cwe-288-2ExploitThird Party Advisory
- huntress.com/blog/vulnerability-reproduced-immediately-patch-screenconnect-23-9-8Third Party Advisory
- securityweek.com/connectwise-confirms-screenconnect-flaw-under-active-exploitation/Press/Media CoverageThird Party Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1709US Government Resource
0 recent articles mention this CVE
100
Risk assessment · Critical
Actively exploited and used by ransomware crews. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 971 days
- Ransomware
- Used in known ransomware campaigns
- CVSS
- 10.0 CRITICAL
- EPSS (30-day exploit probability)
- 100.0% · top 1% of all CVEs
- Weakness
- CWE-288
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
- 5.Verify offline/immutable backups and segment the affected systems. This flaw is used for ransomware initial access.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.