CVE-2026-45498: Denial of Service in Microsoft Microsoft Defender Antimalware Platform
Microsoft Defender Denial of Service Vulnerability
AI Analysis
Technical Summary
This vulnerability in Microsoft Defender Antimalware Platform can be exploited locally to cause a denial of service, affecting system availability. The CVSS v3.1 base score is 4.0, reflecting a low attack vector (local), low complexity, no privileges required, and no user interaction needed. Microsoft has issued an official fix to remediate the vulnerability, as detailed in their security update guide.
Potential Impact
Successful exploitation results in denial of service, impacting system availability without affecting confidentiality or integrity. There are no reports of active exploitation in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided in the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45498 to remediate this vulnerability.
CVE-2026-45498: Denial of Service in Microsoft Microsoft Defender Antimalware Platform
Description
Microsoft Defender Denial of Service Vulnerability
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Microsoft Defender Antimalware Platform can be exploited locally to cause a denial of service, affecting system availability. The CVSS v3.1 base score is 4.0, reflecting a low attack vector (local), low complexity, no privileges required, and no user interaction needed. Microsoft has issued an official fix to remediate the vulnerability, as detailed in their security update guide.
Potential Impact
Successful exploitation results in denial of service, impacting system availability without affecting confidentiality or integrity. There are no reports of active exploitation in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided in the Microsoft security update guide 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: 5/20/2026, 1:19:24 PM
Last enriched: 5/20/2026, 1:36:16 PM
Last updated: 5/20/2026, 6:25:22 PM
Views: 6
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