CVE-2026-45498
Analyzed Analyzed - Analysis Complete

Microsoft Defender Denial of Service Vulnerability

Publication date: 2026-05-20

Last updated on: 2026-05-28

Assigner: Microsoft Corporation

Description
Microsoft Defender Denial of Service Vulnerability

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Meta Information

Published
2026-05-20
Last Modified
2026-05-28
Generated
2026-06-30
AI Q&A
2026-05-20
EPSS Evaluated
2026-06-28
NVD
CVE-2026-45498
EUVD
EUVD-2026-31102

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft defender_antimalware_platform to 4.18.26040.7 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

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Executive Summary

CVE-2026-45498 is a vulnerability in Microsoft Defender that can cause a Denial of Service (DoS). This means that an attacker could exploit this issue to disrupt the normal functioning of Microsoft Defender, potentially making it unavailable or unresponsive.

Impact Analysis

The impact of this vulnerability is a Denial of Service, which could result in Microsoft Defender being unable to perform its security functions properly. This could leave the system less protected against other threats during the period of disruption.

The severity of this vulnerability is rated as Low.

Compliance Impact

This vulnerability is a Denial of Service issue in Microsoft Defender with a low severity impact and does not affect confidentiality or integrity.

Since it does not impact data confidentiality or integrity, it is unlikely to directly affect compliance with standards such as GDPR or HIPAA, which primarily focus on protecting personal and sensitive data.

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