Incident Score: Analysis & Impact (CIS1772072640)
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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 CIS1772072640.
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 622 and after the incident was 620 with a difference of -2 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.
On 25 February 2026, Cisco disclosed Zero-Day Exploitation issues under the banner "Critical Cisco SD-WAN Zero-Day Exploited Since 2023, Enabling Root Access".
Cisco has disclosed a critical zero-day vulnerability (CVE-2026-20127) in its Catalyst SD-WAN products, actively exploited since at least 2023 to bypass authentication and gain root-level access.
The disruption is felt across the environment, affecting Cisco Catalyst SD-WAN Controller (vSmart), SD-WAN Manager (vManage).
In response, moved swiftly to contain the threat with measures like Patches released, CLI checks for unauthorized peers, resetting compromised configurations, and began remediation that includes Patches for affected versions (20.3.1–20.14.3, 20.15.1), inventory SD-WAN deployments, audit NETCONF logs, restrict management plane access, and stakeholders are being briefed through Public disclosure, CISA Emergency Directive 26-03, global cybersecurity agency alerts (ACSC, CCCS).
The case underscores how Ongoing, teams are taking away lessons such as Persistent threats to edge devices in critical sectors, importance of restricting management plane access, need for proactive auditing of NETCONF logs, and recommending next steps like Inventory SD-WAN deployments, apply patches immediately, audit NETCONF logs, restrict management plane access, reset compromised configurations, monitor for indicators of compromise, with advisories going out to stakeholders covering CISA Emergency Directive 26-03, global cybersecurity agency alerts (ACSC, CCCS).
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%), with evidence including actively exploited since at least 2023 to bypass authentication, and internet-exposed management planes. Under the Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with high confidence (90%), with evidence including gain root-level access, and leveraging CVE-2022-20775 for root escalation and Valid Accounts: Local Accounts (T1078.003) with moderate to high confidence (80%), supported by evidence indicating log in as high-privileged users via NETCONF. Under the Persistence tactic, the analysis identified Create Account: Local Account (T1136.001) with moderate to high confidence (70%), supported by evidence indicating add rogue peers to maintain access and Server Software Component: Transport Agent (T1505.002) with moderate confidence (60%), supported by evidence indicating manipulate network configurations via NETCONF. Under the Defense Evasion tactic, the analysis identified Indicator Removal: Timestomp (T1070.006) with moderate to high confidence (70%), supported by evidence indicating restoring original versions to evade detection and Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (60%), supported by evidence indicating downgrade software to chain attacks. Under the Lateral Movement tactic, the analysis identified Exploitation of Remote Services (T1210) with moderate to high confidence (80%), with evidence including manipulate network configurations via NETCONF, and add rogue peers. Under the Command and Control tactic, the analysis identified Proxy: External Proxy (T1090.002) with moderate to high confidence (70%), supported by evidence indicating rogue peers added to network. Under the Impact tactic, the analysis identified Data Manipulation: Transmitted Data Manipulation (T1565.002) with moderate to high confidence (80%), supported by evidence indicating alter routing, manipulate network configurations. 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/CIS1772072640
- Cisco CyberSecurity Rating page: https://www.rankiteo.com/company/cisco
- Cisco Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/cis1772072640-cisco-vulnerability-january-2023/
- Cisco CyberSecurity Score History: https://www.rankiteo.com/company/cisco/history
- Cisco CyberSecurity Incident Source: https://cybersecuritynews.com/cisco-sd-wan-0-day-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