CVE-2024-1709Authentication bypass using an alternate path or channel
Updated under an hour ago ()
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It affects ConnectWise ScreenConnect. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Feb 22, 2024; federal agencies had to remediate by Feb 29, 2024, and it is known to be used in ransomware. Treat that date as your deadline.
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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
- 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-288
- Known exploited
- Added to CISA KEV Feb 22, 2024; federal remediation due Feb 29, 2024; known ransomware useApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 99.98% (percentile 100)
- Assigned by
- cisa-cg
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ConnectWise ScreenConnect connectwise:screenconnect (from the name) | through 23.9.7; fixed at 23.9.8 | CNA record |
connectwise screenconnect connectwise:screenconnect | through 23.9.7 | CISA ADP |
connectwise screenconnect connectwise:screenconnect | before 23.9.8 | NVD |
References
- https://www.connectwise.com/company/trust/security-bulletins/connectwise-screenconnect-23.9.8vendor-advisory
- https://www.huntress.com/blog/vulnerability-reproduced-immediately-patch-screenconnect-23-9-8third-party-advisory
- https://www.huntress.com/blog/detection-guidance-for-connectwise-cwe-288-2exploit, 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://github.com/watchtowrlabs/connectwise-screenconnect_auth-bypass-add-user-pocexploit, third-party-advisory
- https://github.com/rapid7/metasploit-framework/pull/18870issue-tracking, patch, third-party-advisory
- https://www.horizon3.ai/attack-research/red-team/connectwise-screenconnect-auth-bypass-deep-dive/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.securityweek.com/connectwise-confirms-screenconnect-flaw-under-active-exploitation/press/media-coverage, third-party-advisory
- https://www.huntress.com/blog/a-catastrophe-for-control-understanding-the-screenconnect-authentication-bypassexploit, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1709us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.