defender antimalware platform vulnerabilities and fixes

Recent CVEs affecting defender antimalware platform, with upgrade or downgrade steps. 1 tracked.

Also searched as: defenderantimalwareplatform.

defender antimalware platform has 1 tracked vulnerability, 0 critical and 1 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 1. Most recent: 2026-04-14. Highest priority: CVE-2026-33825 (score 91/100).

• CVE-2026-33825 HIGH 7.8 EXPLOITED UPGRADE Microsoft Defender Insufficient Granularity of Access Control Vulnerability

FAQ

How do I fix defender antimalware platform vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is defender antimalware platform being exploited right now?

Yes: 1 defender antimalware platform CVE is on the CISA Known Exploited Vulnerabilities list, so patch it first.

Which defender antimalware platform CVE should I patch first?

CVE-2026-33825 currently ranks highest (91/100): Microsoft Defender Insufficient Granularity of Access Control Vulnerability.

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