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Analyze » Microsoft Security Response Center » MIC1773657358

Incident Score: Analysis & Impact (MIC1773657358)

The details regarding individual company incidents & reports gives you full view from every side.

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-5
Company Score Before Incident617 / 1000
Company Score After Incident612 / 1000
Company LinkView Microsoft Security Response Center Profile
INCIDENT NUMBERMIC1773657358
Type of Cyber IncidentVulnerability
ATTACK VECTORMalicious remote server connection
DATA EXPOSEDSensitive data
INCIDENT DATE12/03/2026
STATUSResolved

Key Highlights From The Incident Analysis

  • Timeline of Microsoft Security Response Center'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 Microsoft Security Response Center 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 Microsoft Security Response Center breach identified under incident ID MIC1773657358.

The analysis begins with a detailed overview of Microsoft Security Response Center's information like the linkedin page: https://www.linkedin.com/company/microsoft-security-response-center, the number of followers: 54723, the industry type: Computer and Network Security and the number of employees: None 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 617 and after the incident was 612 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 Microsoft Security Response Center and their customers.

On 13 March 2026, Microsoft disclosed Remote Code Execution (RCE) issues under the banner "Microsoft Releases Emergency Patch for Critical RRAS Vulnerabilities in Windows 11".

On March 13, 2026, Microsoft issued an out-of-band security update to address three critical remote code execution (RCE) vulnerabilities in the Windows Routing and Remote Access Service (RRAS) management tool.

The disruption is felt across the environment, affecting Windows 11 versions 25H2 (OS Build 26200.7982) and 24H2 (OS Build 26100.7982) with RRAS enabled, and exposing Sensitive data.

In response, moved swiftly to contain the threat with measures like Emergency patch (hotpatch KB5084597) released without requiring system reboot, and began remediation that includes Hotpatch KB5084597 and standard Windows Update deployment, and stakeholders are being briefed through Public disclosure and patch release.

The case underscores how Resolved, and recommending next steps like Apply the emergency patch (hotpatch KB5084597) immediately to mitigate risks. Ensure systems are configured for automatic updates, with advisories going out to stakeholders covering Organizations using Windows 11 with RRAS should apply the patch immediately.

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 three critical remote code execution (RCE) vulnerabilities in the Windows RRAS and Exploitation of Remote Services (T1210) with high confidence (90%), supported by evidence indicating exploited if a user connects to a malicious remote server. Under the Execution tactic, the analysis identified Exploitation for Client Execution (T1203) with high confidence (90%), supported by evidence indicating allowing attackers to execute arbitrary code. Under the Persistence tactic, the analysis identified Server Software Component: Web Shell (T1505.003) with moderate confidence (50%), supported by evidence indicating install malware, or gain unauthorized access to sensitive data. Under the Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with moderate to high confidence (70%), supported by evidence indicating deeper network intrusion, posing significant risks. Under the Defense Evasion tactic, the analysis identified Exploitation for Defense Evasion (T1211) with moderate confidence (60%), supported by evidence indicating hotpatch KB5084597 applies fixes without requiring a system reboot. Under the Impact tactic, the analysis identified Resource Hijacking (T1496) with moderate confidence (50%), supported by evidence indicating enterprise networks relying on RRAS for routing, VPN services. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Initial Access
Exploit Public-Facing Application (90%)
Exploitation of Remote Services (90%)
Execution
Exploitation for Client Execution (90%)
Persistence
Server Software Component: Web Shell (50%)
Privilege Escalation
Exploitation for Privilege Escalation (70%)
Defense Evasion
Exploitation for Defense Evasion (60%)
Impact
Resource Hijacking (50%)

Sources & References