Security readout for executives and security teams
Plain-English summary
CVE-2023-47257 is a high-severity ConnectWise ScreenConnect issue. Sources say versions through 23.8.4 can let a man-in-the-middle attacker achieve remote code execution using crafted messages. Because ScreenConnect is remote support software, compromise could affect trusted administrative access paths.
Executive priority
Prioritize remediation for ScreenConnect systems because this affects remote support infrastructure and can result in remote code execution. Treat it as high priority, especially in environments where ScreenConnect has privileged reach across endpoints or servers.
Technical view
The CVE is classified as CWE-94 with CVSS 8.1. The vector is network-accessible, no privileges or user interaction, high impact to confidentiality, integrity, and availability, but high attack complexity. The described condition requires a man-in-the-middle position and crafted messages against ScreenConnect through 23.8.4.
Likely exposure
Organizations running ConnectWise ScreenConnect through 23.8.4 should treat this as relevant exposure. Risk is highest where attackers could intercept or manipulate ScreenConnect communications. The source bundle does not provide affected CPEs or detailed deployment conditions.
Exploitation context
The bundle does not identify active exploitation, and KEV status is false. The described attack requires man-in-the-middle capability, which raises complexity but does not remove urgency because successful exploitation could lead to remote code execution.
Researcher notes
Evidence is limited. The CVE record names ScreenConnect through 23.8.4 and MITM-triggered RCE via crafted messages. The archived Gotham reference appears labeled for CVE-2023-47256, so use vendor and CVE records as primary sources for CVE-2023-47257.
Mitigation direction
- Check ConnectWise’s ScreenConnect 23.8 security fix guidance.
- Update ScreenConnect beyond affected versions if vendor guidance confirms the fixed release.
- Restrict administrative access paths to ScreenConnect infrastructure.
- Review network controls that reduce interception or traffic manipulation risk.
- Monitor vendor advisories for revised affected-version and remediation details.
Validation and detection
- Inventory all ScreenConnect servers and record exact versions.
- Flag any ScreenConnect deployment at or below 23.8.4.
- Confirm whether vendor security fixes are applied.
- Review logs for suspicious remote support activity around ScreenConnect systems.
- Validate TLS and network-path controls protecting ScreenConnect traffic.
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-94: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-47257 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
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/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.
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:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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 Control of Generation of Code ('Code Injection')
Improper Control of Generation of Code ('Code Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.