Home/CVE/ConnectWise ScreenConnect through 23.8.4 allows man-in-the-middle attackers to achieve remote code execution via crafted
CVE

CVE-2023-47257

ConnectWise ScreenConnect through 23.8.4 allows man-in-the-middle attackers to achieve remote code execution via crafted

ConnectWise ScreenConnect through 23.8.4 allows man-in-the-middle attackers to achieve remote code execution via crafted messages.

HIGH · CVSS 8.1 EPSS 0.0672
Schedule remediation
  • EPSS percentile: top 9% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-94Improper Control of Generation of Code ('Code Injection')
▤

Affected Products & Versions

2
connectwise automateall versions
connectwise screenconnect< 23.8.5
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighRemote Access Tool - ScreenConnect Server Web Shell Execution
productmediumScreenConnect Temporary Installation Artefact
productmediumRemote Access Tool - ScreenConnect Installation Execution
productmediumRemote Access Tool - ScreenConnect Potential Suspicious Remote Command Execution
productmediumRemote Access Tool - ScreenConnect Execution
productlowRemote Access Tool - ScreenConnect Temporary File
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Feb 2024 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://web.archive.org/web/20240208140218/https://gotham-security.com/screenconnect-cve-2023-47256
https://www.connectwise.com/company/trust/security-bulletins/connectwise-screenconnect-23.8-security-fixVendor Advisory
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