Security readout for executives and security teams
Plain-English summary
CVE-2024-1709 lets unauthenticated attackers bypass login on ConnectWise ScreenConnect 23.9.7 and earlier. Because ScreenConnect provides remote access to customer and internal systems, compromise can quickly become full administrative control. CISA lists it as known exploited, so this is an emergency exposure for any internet-reachable instance.
Executive priority
Immediate action is warranted. ScreenConnect can provide privileged remote access into critical systems, and this CVE is both critical severity and known exploited. Prioritize patching, exposure reduction, and compromise review ahead of routine vulnerability backlog work.
Technical view
This is CWE-288 authentication bypass via an alternate path or channel in ScreenConnect 23.9.7 and prior. The CVSS 10.0 vector is network, low complexity, no privileges, no user interaction, scope changed, and high impact to confidentiality, integrity, and availability.
Likely exposure
Highest exposure is self-hosted or otherwise reachable ScreenConnect servers running 23.9.7 or earlier. The bundle does not identify other ConnectWise products as affected. Cloud or hosted responsibility details should be confirmed directly with ConnectWise guidance.
Exploitation context
Active exploitation is supported by CISA KEV and reporting from SecurityWeek and TechCrunch. Huntress reported rapid reproduction and detection guidance, while public exploit-related references exist. Treat unknown or unverified ScreenConnect servers as potentially compromised, not merely vulnerable.
Researcher notes
The affected record names ScreenConnect 23.9.7 and prior. The provided affected CPE data is incomplete, so rely on product/version inventory and vendor bulletin details. Public exploit references exist, but validation should stay focused on version state, exposure, account integrity, and detection artifacts.
Mitigation direction
- Update ScreenConnect to the fixed vendor-supported release immediately.
- Follow ConnectWise security bulletin guidance for affected server versions.
- Restrict external access while patching and validating exposure.
- Review accounts, roles, sessions, and remote access activity for unauthorized changes.
- Rotate credentials or secrets exposed through ScreenConnect if compromise is suspected.
- Check vendor and incident-response guidance before restoring normal access.
Validation and detection
- Inventory all ScreenConnect instances and record exact versions.
- Confirm no instance is running 23.9.7 or earlier.
- Check whether any instance is internet-reachable or third-party managed.
- Review logs and application data for unexpected administrator account creation.
- Use Huntress detection guidance to guide compromise assessment.
- Validate remediation with vendor-supported version and configuration checks.
Public sources used
- CVE Program
- ConnectWise ScreenConnect 23.9.8 Security Bulletin
- CISA Known Exploited Vulnerabilities Catalog
- Huntress: Vulnerability Reproduced, Immediately Patch ScreenConnect 23.9.8
- Huntress: Detection Guidance for ConnectWise CWE-288
- SecurityWeek: ConnectWise Confirms ScreenConnect Flaw Under Active Exploitation
- TechCrunch: Researchers Warn High-Risk ConnectWise Flaw Under Attack
- Huntress: A Catastrophe for Control
Michael Williams reviewed this cited source version on .
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-288: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-1709 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.connectwise.com/company/trust/security-bulletins/connectwise-screenconnect-23.9.8CVE reference
- https://www.huntress.com/blog/vulnerability-reproduced-immediately-patch-screenconnect-23-9-8CVE reference
- https://www.huntress.com/blog/detection-guidance-for-connectwise-cwe-288-2CVE reference
- https://www.bleepingcomputer.com/news/security/connectwise-urges-screenconnect-admins-to-patch-critical-rce-flaw/CVE reference
- https://github.com/watchtowrlabs/connectwise-screenconnect_auth-bypass-add-user-pocCVE reference
- https://github.com/rapid7/metasploit-framework/pull/18870CVE reference
- https://www.horizon3.ai/attack-research/red-team/connectwise-screenconnect-auth-bypass-deep-dive/CVE reference
- https://techcrunch.com/2024/02/21/researchers-warn-high-risk-connectwise-flaw-under-attack-is-embarrassingly-easy-to-exploit/CVE reference
- https://www.securityweek.com/connectwise-confirms-screenconnect-flaw-under-active-exploitation/CVE reference
- https://www.huntress.com/blog/a-catastrophe-for-control-understanding-the-screenconnect-authentication-bypassCVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1709CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Authentication Bypass Using an Alternate Path or Channel
Authentication Bypass Using an Alternate Path or Channel represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.