Incident Score: Analysis & Impact (CIS1775111249)
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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 CIS1775111249.
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 329 and after the incident was 328 with a difference of -1 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 "Critical Cisco IMC Authentication Bypass Flaw Grants Full Admin Access (CVE-2026-20093)", a noteworthy cybersecurity incident.
Cisco has issued an urgent security advisory for CVE-2026-20093, a 9.8-severity authentication bypass vulnerability in its Integrated Management Controller (IMC) software.
The disruption is felt across the environment, affecting Full administrative privileges over affected systems.
In response, moved swiftly to contain the threat with measures like Patching is the only remediation, and began remediation that includes Cisco has released patched firmware updates for affected devices. Administrators must apply fixes via NFVIS upgrade process, Cisco Host Upgrade Utility (HUU), or out-of-band update procedures, and stakeholders are being briefed through Cisco issued an urgent security advisory.
The case underscores how and recommending next steps like Immediate patching is essential to prevent unauthorized access. Administrators must apply the latest firmware updates provided by Cisco.
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 9.8-severity authentication bypass vulnerability in IMC software and External Remote Services (T1133) with moderate to high confidence (80%), supported by evidence indicating maliciously crafted HTTP request to the management interface. Under the Privilege Escalation tactic, the analysis identified Valid Accounts: Local Accounts (T1078.003) with high confidence (95%), supported by evidence indicating overwrite administrative passwords and gain full control over vulnerable systems. Under the Defense Evasion tactic, the analysis identified Modify Authentication Process (T1556) with high confidence (90%), supported by evidence indicating improper handling of password change requests in the IMC software. Under the Impact tactic, the analysis identified Endpoint Denial of Service: Application or System Exploitation (T1499.004) with moderate to high confidence (70%), supported by evidence indicating complete administrative privileges over affected systems. 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/CIS1775111249
- Cisco CyberSecurity Rating page: https://www.rankiteo.com/company/cisco
- Cisco Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/cis1775111249-cisco-vulnerability-april-2026/
- Cisco CyberSecurity Score History: https://www.rankiteo.com/company/cisco/history
- Cisco CyberSecurity Incident Source: https://gbhackers.com/cisco-warns-of-critical-imc-vulnerability/
- 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