Security readout for executives and security teams
Plain-English summary
CVE-2023-47256 affects ConnectWise ScreenConnect through 23.8.4. A local user can abuse trusted proxy settings so the software connects to an arbitrary relay server. The main business risk is integrity: remote support traffic or trust relationships may be redirected after an attacker already has local access.
Executive priority
Treat as a moderate-priority remediation item, especially where ScreenConnect supports privileged remote administration. It should not displace active exploitation or unauthenticated remote-code-execution work, but it should be included in endpoint hardening and ScreenConnect patch cycles.
Technical view
The CVE describes an authentication/trust weakness, CWE-287, in ScreenConnect through 23.8.4. The CVSS vector is local, low complexity, low privileges required, no user interaction, unchanged scope, high integrity impact, and no confidentiality or availability impact.
Likely exposure
Exposure is most relevant on endpoints or environments running ConnectWise ScreenConnect through 23.8.4 where local users can influence proxy settings. The source bundle does not identify CPEs or a complete affected-product matrix.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source here establishes active exploitation. Exploitation requires local access with low privileges, so this is more likely a post-access abuse path than an initial compromise vector.
Researcher notes
Evidence is limited to the CVE description, CVSS data, CWE-287, KEV false status, and linked vendor/research references. The bundle does not provide detailed proof, affected CPEs, exploit observations, or exact patch-version text.
Mitigation direction
- Review ConnectWise’s ScreenConnect 23.8 security fix guidance.
- Upgrade or patch affected ScreenConnect installations per vendor instructions.
- Restrict who can modify proxy settings on managed endpoints.
- Harden local user permissions on systems running ScreenConnect.
- Monitor vendor advisories for updated affected-version details.
Validation and detection
- Inventory ScreenConnect versions and identify systems at or below 23.8.4.
- Confirm whether proxy settings are user-modifiable on affected endpoints.
- Check ConnectWise guidance for the corrected version or configuration requirement.
- Review endpoint and ScreenConnect logs for unexpected relay destinations.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-287: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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 lookupCVE-2023-47256 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
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.
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:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
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.
Improper Authentication
Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.