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Analyze » Microsoft Security Response Center » MIC1778747112

Incident Score: Analysis & Impact (MIC1778747112)

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

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-9
Company Score Before Incident529 / 1000
Company Score After Incident520 / 1000
Company LinkView Microsoft Security Response Center Profile
INCIDENT NUMBERMIC1778747112
Type of Cyber IncidentVulnerability
ATTACK VECTORCompromised routers, Rogue local servers, Poisoned DNS resolvers, Hostile public Wi-Fi networks
DATA EXPOSEDNA
INCIDENT DATE11/05/2026
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 MIC1778747112.

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 529 and after the incident was 520 with a difference of -9 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 12 May 2026, Microsoft Windows Users (Enterprise Networks) disclosed Remote Code Execution (RCE) issues under the banner "Critical Windows DNS Client Vulnerability (CVE-2026-41096) Exposes Enterprise Networks to Remote Code Execution".

A newly disclosed critical vulnerability in Microsoft’s Windows DNS Client, tracked as CVE-2026-41096, enables attackers to execute malicious code remotely across enterprise networks with minimal effort.

The disruption is felt across the environment, affecting Windows 11, Windows Server 2022 and Windows Server 2025.

In response, moved swiftly to contain the threat with measures like Restrict outbound DNS traffic to trusted resolvers, and began remediation that includes Apply Microsoft Patch Tuesday update (May 12, 2026).

The case underscores how and recommending next steps like Apply Microsoft Patch Tuesday update (May 12, 2026) immediately, Restrict outbound DNS traffic to trusted resolvers and Monitor for suspicious processes spawned by network services.

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 heap-based buffer overflow in DNSAPI.dll, and maliciously crafted DNS response and Exploitation of Remote Services (T1210) with high confidence (90%), with evidence including remote code execution across enterprise networks, and no user interaction or authentication required. Under the Execution tactic, the analysis identified Exploitation for Client Execution (T1203) with high confidence (90%), with evidence including arbitrary code execution via DNSAPI.dll, and maliciously crafted DNS response. Under the Lateral Movement tactic, the analysis identified Exploitation of Remote Services (T1210) with moderate to high confidence (80%), supported by evidence indicating significant risk of lateral movement within corporate networks. Under the Defense Evasion tactic, the analysis identified Valid Accounts (T1078) with moderate confidence (50%), supported by evidence indicating no authentication required for exploitation and Impair Defenses: Disable or Modify Tools (T1562.001) with lower confidence (40%), supported by evidence indicating core system file (DNSAPI.dll) responsible for processing DNS responses. 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%)
Lateral Movement
Exploitation of Remote Services (80%)
Defense Evasion
Valid Accounts (50%)
Impair Defenses: Disable or Modify Tools (40%)

Sources & References