Incident Score: Analysis & Impact (CON1773851361)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of ConnectWise's Vulnerability and lateral movement inside company's environment.
- Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
- How Rankiteo’s incident engine converts technical details into a normalized incident score.
- How this cyber incident impacts ConnectWise Rankiteo cyber scoring and cyber rating.
- Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.
Full Incident Analysis Transcript
In this Rankiteo incident briefing, we review the ConnectWise breach identified under incident ID CON1773851361.
The analysis begins with a detailed overview of ConnectWise's information like the linkedin page: https://www.linkedin.com/company/connectwise, the number of followers: 196320, the industry type: Software Development and the number of employees: 3450 employees
After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 675 and after the incident was 670 with a difference of -5 which is could be a good indicator of the severity and impact of the incident.
In the next step of the video, we will analyze in more details the incident and the impact it had on ConnectWise and their customers.
ConnectWise recently reported "Critical ScreenConnect Vulnerability Exposes Remote Desktop Sessions to Hijacking", a noteworthy cybersecurity incident.
ConnectWise has issued an urgent security advisory for its ScreenConnect remote desktop software, revealing a critical cryptographic flaw (CVE-2026-3564) that could enable unauthenticated attackers to extract server-level machine keys and bypass session authentication.
The disruption is felt across the environment, affecting ScreenConnect remote desktop software (versions prior to 26.1), and exposing Server-level machine keys, session tokens.
In response, moved swiftly to contain the threat with measures like Release of ScreenConnect 26.1 with encrypted key storage and improved key management, and began remediation that includes Manual upgrade to ScreenConnect 26.1 for on-premises deployments; renewal of lapsed maintenance licenses required for patching, and stakeholders are being briefed through Urgent security advisory issued.
The case underscores how and recommending next steps like Prioritize remediation, upgrade to ScreenConnect 26.1, review session logs for exploitation signs, and renew lapsed maintenance licenses for patch access, with advisories going out to stakeholders covering Urgent security advisory issued for ScreenConnect users to upgrade to version 26.1.
Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.
The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.
MITRE ATT&CK® Correlation Analysis
Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Exploit Public-Facing Application (T1190) with high confidence (90%), supported by evidence indicating critical cryptographic flaw (CVE-2026-3564) in ScreenConnect remote desktop software and External Remote Services (T1133) with moderate to high confidence (80%), supported by evidence indicating screenConnect remote desktop software enables remote access exploitation. Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials In Files (T1552.001) with high confidence (95%), supported by evidence indicating plaintext storage of machine keys and cryptographic identifiers in server configuration files and Unsecured Credentials: Private Keys (T1552.004) with high confidence (90%), supported by evidence indicating extract server-level machine keys without elevated privileges. Under the Defense Evasion tactic, the analysis identified Subvert Trust Controls: Code Signing (T1553.002) with moderate to high confidence (80%), supported by evidence indicating cWE-347 such as Improper Verification of Cryptographic Signature and Use Alternate Authentication Material: Application Access Token (T1550.001) with high confidence (90%), supported by evidence indicating forge session tokens to impersonate legitimate users. Under the Lateral Movement tactic, the analysis identified Remote Services: Remote Desktop Protocol (T1021.001) with moderate to high confidence (85%), supported by evidence indicating hijack remote desktop sessions via ScreenConnect. Under the Privilege Escalation tactic, the analysis identified Abuse Elevation Control Mechanism: Bypass User Account Control (T1548.002) with moderate to high confidence (70%), supported by evidence indicating bypass session authentication and circumvent access controls. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate confidence (60%), supported by evidence indicating potential unauthorized access to remote sessions (scope marked as Changed). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- ConnectWise Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/connectwise/incident/CON1773851361
- ConnectWise CyberSecurity Rating page: https://www.rankiteo.com/company/connectwise
- ConnectWise Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/con1773851361-connectwise-vulnerability-march-2026/
- ConnectWise CyberSecurity Score History: https://www.rankiteo.com/company/connectwise/history
- ConnectWise CyberSecurity Incident Source: https://cybersecuritynews.com/screenconnect-vulnerability-machine-keys/
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf