Incident Score: Analysis & Impact (CIS1778171136)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Cisco'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 Cisco 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 Cisco breach identified under incident ID CIS1778171136.
The analysis begins with a detailed overview of Cisco's information like the linkedin page: https://www.linkedin.com/company/cisco, the number of followers: 7281720, the industry type: Software Development and the number of employees: 95370 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 324 and after the incident was 321 with a difference of -3 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 Cisco and their customers.
Cisco recently reported "Cisco Patches High-Severity DoS Vulnerability in Network Management Tools", a noteworthy cybersecurity incident.
Cisco has disclosed a critical vulnerability (CVE-2026-20188, CVSS 7.5) affecting its Crosswork Network Controller (CNC) and Network Services Orchestrator (NSO), which could allow unauthenticated, remote attackers to trigger a Denial-of-Service (DoS) condition.
The disruption is felt across the environment, affecting Crosswork Network Controller (CNC), Network Services Orchestrator (NSO).
In response, moved swiftly to contain the threat with measures like Upgrade to patched versions (CNC 7.2, NSO 6.4.1.3 or later), and began remediation that includes Apply security updates, while recovery efforts such as Manual reboot of affected systems continue.
The case underscores how Resolved (patch available), and recommending next steps like Organizations using vulnerable deployments are advised to apply updates immediately to prevent potential service disruptions.
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 affecting its Crosswork Network Controller (CNC) and Network Services Orchestrator (NSO). Under the Impact tactic, the analysis identified Endpoint Denial of Service (T1499) with high confidence (100%), supported by evidence indicating trigger a Denial-of-Service (DoS) condition...exhausting available resources and Endpoint Denial of Service: Service Exhaustion Flood (T1499.002) with high confidence (90%), supported by evidence indicating flooding a server with excessive requests, exhausting available resources. Under the Resource Development tactic, the analysis identified Obtain Capabilities: Vulnerabilities (T1588.006) with moderate to high confidence (80%), supported by evidence indicating cVE-2026-20188 (Uncontrolled Resource Consumption - CWE-400). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Cisco Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/cisco/incident/CIS1778171136
- Cisco CyberSecurity Rating page: https://www.rankiteo.com/company/cisco
- Cisco Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/cis1778171136-cisco-vulnerability-january-2026/
- Cisco CyberSecurity Score History: https://www.rankiteo.com/company/cisco/history
- Cisco CyberSecurity Incident Source: https://cybersecuritynews.com/cisco-network-vulnerability-dos-attack/
- 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