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Analyze » Microsoft Security Response Center » MIC1773829432

Incident Score: Analysis & Impact (MIC1773829432)

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

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-4
Company Score Before Incident608 / 1000
Company Score After Incident604 / 1000
Company LinkView Microsoft Security Response Center Profile
INCIDENT NUMBERMIC1773829432
Type of Cyber IncidentVulnerability
ATTACK VECTORLocal
DATA EXPOSEDNA
INCIDENT DATE17/03/2026
STATUSpublished

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 MIC1773829432.

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 608 and after the incident was 604 with a difference of -4 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.

Microsoft Windows recently reported "High-Severity 'RegPwn' Windows Vulnerability Grants SYSTEM Access to Attackers", a noteworthy cybersecurity incident.

A newly disclosed high-severity Windows vulnerability, tracked as CVE-2026-24291 and dubbed 'RegPwn,' enables low-privileged users to escalate privileges and gain full SYSTEM-level access on affected systems.

The disruption is felt across the environment, affecting Multiple Windows versions (specific builds undisclosed).

Formal response steps have not been shared publicly yet.

Overall, the incident is a reminder of why proactive monitoring and strong governance matter.

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 Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with high confidence (95%), with evidence including cVE-2026-24291 (RegPwn) enables low-privileged users to escalate privileges, and exploits the way Windows handles its built-in accessibility features and Abuse Elevation Control Mechanism: Bypass User Account Control (T1548.002) with moderate to high confidence (80%), supported by evidence indicating leveraging the high-integrity access granted to accessibility features. Under the Defense Evasion tactic, the analysis identified Impair Defenses: Disable or Modify Tools (T1562.001) with moderate to high confidence (70%), supported by evidence indicating manipulate this process to bypass security controls. Under the Execution tactic, the analysis identified Exploitation for Client Execution (T1203) with moderate to high confidence (85%), supported by evidence indicating execute arbitrary code with the highest system privileges. Under the Initial Access tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating low-privileged users to escalate privileges. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Privilege Escalation
Exploitation for Privilege Escalation (95%)
Abuse Elevation Control Mechanism: Bypass User Account Control (80%)
Defense Evasion
Impair Defenses: Disable or Modify Tools (70%)
Execution
Exploitation for Client Execution (85%)
Initial Access
Valid Accounts (70%)

Sources & References