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 in Microsoft Defender Antimalware Platform (version 4.0.0.0) involves uncontrolled resource consumption (CWE-400) that can cause a denial of service. The CVSS 3.1 base score is 4.0, reflecting a local attack vector with low complexity and no privileges or user interaction required. The impact is limited to availability loss without confidentiality or integrity impact. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation can cause denial of service by exhausting resources on the affected system, impacting availability of the Microsoft Defender Antimalware Platform. There is no impact on confidentiality or integrity. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the patch provided 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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Microsoft Defender Antimalware Platform (version 4.0.0.0) involves uncontrolled resource consumption (CWE-400) that can cause a denial of service. The CVSS 3.1 base score is 4.0, reflecting a local attack vector with low complexity and no privileges or user interaction required. The impact is limited to availability loss without confidentiality or integrity impact. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation can cause denial of service by exhausting resources on the affected system, impacting availability of the Microsoft Defender Antimalware Platform. There is no impact on confidentiality or integrity. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the patch provided 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: 06/25/2026, 21:27:52 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 79
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