Microsoft Defender Zero-Day Vulnerabilities Actively Exploited in the Wild

Microsoft has disclosed two new zero-day vulnerabilities in Microsoft Defender that are actively being exploited in the wild, raising concerns among security professionals and enterprise users. The vulnerabilities, tracked as CVE-2026-41091 and CVE-2026-45498, were officially released on May 19, 2026, and both have confirmed exploitation activity according to Microsoft’s security advisory. The most critical of […]

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