CVE-2026-45498: CWE-400: Uncontrolled Resource Consumption in Microsoft Microsoft Defender Antimalware Platform
Microsoft Defender Denial of Service Vulnerability
AI Analysis
Technical Summary
This vulnerability, identified as CWE-400 (Uncontrolled Resource Consumption), exists in Microsoft Defender Antimalware Platform version 4.0.0.0. It can be exploited locally to cause a denial of service by exhausting system resources. The CVSS 3.1 base score is 4.0, reflecting a low attack vector (local) and no impact on confidentiality or integrity, but an impact on availability. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation results in denial of service by consuming excessive resources on the affected system, potentially disrupting the availability of Microsoft Defender Antimalware Platform. There is no impact on confidentiality or integrity.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the provided patch as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498 to remediate this vulnerability.
CVE-2026-45498: CWE-400: Uncontrolled Resource Consumption in Microsoft Microsoft Defender Antimalware Platform
Description
Microsoft Defender Denial of Service Vulnerability
CVSS v3.1
Score 4.0medium
Affected software
Microsoft
Microsoft Defender Antimalware Platform
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-400 (Uncontrolled Resource Consumption), exists in Microsoft Defender Antimalware Platform version 4.0.0.0. It can be exploited locally to cause a denial of service by exhausting system resources. The CVSS 3.1 base score is 4.0, reflecting a low attack vector (local) and no impact on confidentiality or integrity, but an impact on availability. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation results in denial of service by consuming excessive resources on the affected system, potentially disrupting the availability of Microsoft Defender Antimalware Platform. There is no impact on confidentiality or integrity.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the provided patch as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T16:07:22.619Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498","vendor":"Microsoft"}]
Threat ID: 6a0db4dcba1db473627ecd7e
Added to database: 05/20/2026, 13:19:24 UTC
Last enriched: 08/11/2026, 16:58:43 UTC
Last updated: 09/14/2026, 22:01:34 UTC
Views: 98
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