CVEs / CVE-2024-1709
CVE-2024-1709: ConnectWise ScreenConnect Authentication Bypass Vulnerability
- Known exploited in the CISA KEV catalog since 22 Feb 2024
- critical 10 CVSS 3.1 (NVD)
- EPSS 99.9% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| ConnectWise ScreenConnect | up to and including 23.9.7 | — |
| connectwise screenconnect | up to and including 23.9.7 | — |
Exploitation
| In CISA KEV since | 22 Feb 2024 |
|---|---|
| Due date for US federal agencies | 29 Feb 2024 |
| Used in ransomware campaigns | Known |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 10 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-288 |
References
- CVE-2024-1709 on NVD
- CVE-2024-1709 in the CISA KEV catalog
- https://www.connectwise.com/company/trust/security-bulletins/connectwise-screenconnect-23.9.8 (cited by CISA)
- https://github.com/rapid7/metasploit-framework/pull/18870 Issue Tracking, Patch, Third Party Advisory
- https://github.com/watchtowrlabs/connectwise-screenconnect_auth-bypass-add-user-poc Exploit, Third Party Advisory
- https://techcrunch.com/2024/02/21/researchers-warn-high-risk-connectwise-flaw-under-attack-is-embarrassingly-easy-to-exploit/ Press/Media Coverage, Third Party Advisory
- https://www.bleepingcomputer.com/news/security/connectwise-urges-screenconnect-admins-to-patch-critical-rce-flaw/ Press/Media Coverage, Third Party Advisory
- https://www.connectwise.com/company/trust/security-bulletins/connectwise-screenconnect-23.9.8 Vendor Advisory
- https://www.horizon3.ai/attack-research/red-team/connectwise-screenconnect-auth-bypass-deep-dive/ Third Party Advisory
- https://www.huntress.com/blog/a-catastrophe-for-control-understanding-the-screenconnect-authentication-bypass Exploit, Third Party Advisory
- https://www.huntress.com/blog/detection-guidance-for-connectwise-cwe-288-2 Exploit, Third Party Advisory
- https://www.huntress.com/blog/vulnerability-reproduced-immediately-patch-screenconnect-23-9-8 Third Party Advisory
- https://www.securityweek.com/connectwise-confirms-screenconnect-flaw-under-active-exploitation/ Press/Media Coverage, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1709 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.