Microsoft Warns of Two Actively Exploited Defender Vulnerabilities
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2008-4250 | Remote Code Execution Buffer Overflow in Microsoft Windows Server Service | — | 99% | KEV | — KEV |
| CVE-2009-1537 | Null Byte Overwrite RCE in Microsoft DirectX QuickTime Parser (quartz.dll) | — | 51% | KEV | — KEV |
| CVE-2009-3459 | Heap-Based Buffer Overflow in Adobe Acrobat and Reader Enables RCE via PDFs | — | 87% | KEV | — KEV |
| CVE-2010-0249 | Use-After-Free Remote Code Execution in Microsoft Internet Explorer | — | 92% | KEV | — KEV |
| CVE-2010-0806 | Use-After-Free RCE in Microsoft Internet Explorer (CVE-2010-0806) | — | 82% | KEV | — KEV |
| CVE-2026-33825 | Local Privilege Escalation in Microsoft Defender Antimalware Platform | 7.8 | 7% | KEVRansomwarePoC | KEV |
CVE-2026-45498+1 related CVE | Denial-of-Service Vulnerability in Microsoft Defender Antimalware Platform | 7.5 group max | 63% | KEV | KEV |
| CVE-2026-42897 | Cross-Site Scripting in Microsoft Exchange Server Actively Exploited by Laundry Bear | 6.1 | 71% | KEV | KEV |
| CVE-2026-45584 | Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network | 8.1 | <1% |
From the original article
3 min read at thehackernews.com
Ravie Lakshmanan May 21, 2026 Endpoint Security / Vulnerability Microsoft has disclosed that a privilege escalation and a denial-of-service flaw in Defender has come under active exploitation in the wild. The former, tracked as CVE-2026-41091 , is rated 7. 8 on the CVSS scoring system.
By @TheHackersNews · thehackernews.com
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