Authentication bypass using an alternate path or channel
Priority CRITICAL 100Exploited in the wildCWE-288Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-288.
Summary
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.
Why it matters now
Exploitation Active In CISA KEV since 2024-02-22CISA due date 2024-02-29Known ransomware use
EPSS 0.9998 99th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ConnectWise | ScreenConnect | up to 23.9.7 | — | No fix listed | CNA |
- ScreenConnect VendorConnectWise Affected up to 23.9.7 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:connectwise:screenconnect:*:*:*:*:*:*:*:* | before 23.9.8 | Vulnerable | ConnectWise |
- cpe:2.3:a:connectwise:screenconnect:*:*:*:*:*:*:*:* Versions before 23.9.8 Vulnerable ·ConnectWise
Remediation
No fixed version listed by the sources yet.
Timeline
- 2024-02-22 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2024-1709
- 2026-10-03 Alias added: GHSA-cg3j-75xh-7fv3
References
Exploit 3
Advisory 6
- https://www.connectwise.com/company/trust/security-bulletins/connectwise-screenconnect-23.9.8
- https://www.huntress.com/blog/vulnerability-reproduced-immediately-patch-screenconnect-23-9-8
- https://www.bleepingcomputer.com/news/security/connectwise-urges-screenconnect-admins-to-patch-critical-rce-flaw/
- https://www.horizon3.ai/attack-research/red-team/connectwise-screenconnect-auth-bypass-deep-dive/
- https://techcrunch.com/2024/02/21/researchers-warn-high-risk-connectwise-flaw-under-attack-is-embarrassingly-easy-to-exploit/
- https://www.securityweek.com/connectwise-confirms-screenconnect-flaw-under-active-exploitation/
More ConnectWise Screenconnect vulnerabilities
- TI-2026-58346 ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions KEVCVSS 3.1CRITICAL 9.9
- TI-2024-01588 Improper limitation of a pathname to a restricted directory (“path traversal”) KEVCVSS 3.1HIGH 8.4
- TI-2025-03479 ScreenConnect Exposure to ASP.NET ViewState Code Injection KEVCVSS 3.1HIGH 8.1
- TI-2025-13036 Improper server-side validation in ScreenConnect extension framework CVSS 3.1CRITICAL 9.1
- TI-2023-25574 ConnectWise ScreenConnect through 23.8.4 allows man-in-the-middle attackers to achieve… CVSS 3.1HIGH 8.1
- TI-2025-13525 Certificate Signing Extension Returns Encrypted Values CVSS 3.1MEDIUM 5.3
Sources
- CVE-2024-1709 · CVE Program
- CVE-2024-1709 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-cg3j-75xh-7fv3 · GitHub Advisory Database · CC BY 4.0
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