ThreatCluster

Critical Windows DNS Client Vulnerability Allows Remote Code Execution

First seen 14 May 2026, 18:16 UTC • •73

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ThreatCluster •May 15, 2026 at 17:55 UTC

•CVE-2026-41096 is a critical vulnerability with a CVSS score of 9.8.
•Attackers can exploit the flaw via malicious DNS responses, enabling remote code execution.
•Microsoft released a patch for the vulnerability on May 12, 2026.

A newly identified vulnerability in the Microsoft Windows DNS Client, tracked as CVE-2026-41096, poses a significant risk of remote code execution without user interaction. This critical flaw has a CVSS score of 9.8, indicating its severity. Attackers can exploit this vulnerability by sending maliciously crafted responses to standard DNS queries, potentially impacting enterprise networks globally. The vulnerability affects all Windows systems utilizing the DNS Client. Microsoft released a patch for this flaw on May 12, 2026, as part of its monthly security updates. Organizations are urged to apply the patch immediately to mitigate risks. The vulnerability's potential for mass exploitation makes it a pressing concern for cybersecurity professionals.

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Timeline

2026-05-12

CVE-2026-41096 published

Microsoft disclosed a critical vulnerability in the Windows DNS Client, allowing remote code execution.

Cybersecuritynews

2026-05-12

Patch released

Microsoft issued security updates to address CVE-2026-41096, urging users to apply them immediately.

2026-05-14

Vulnerability awareness raised

Cybersecurity articles highlight the critical nature of the Windows DNS Client vulnerability and its potential impact.

Cybersecuritynews

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3 entities, 2 inferred relationships (STIX 2.1).

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Technique (1)

Zero-day Exploit

Vulnerability (1)

CVE-2026-41096

Affected Platform (1)

Windows

Relationships

CVE-2026-41096 targets Windows
Zero-day Exploit targets Windows

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