Microsoft Confirms Two Major Defender Security Issues — so Update Now or Face Possible Attack
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4 Articles
Microsoft Has Patched Critical Vulnerabilities in Windows Defender that Were Causing System Crashes.
Microsoft announced the discovery of two security flaws in Windows Defender, its built-in anti-malware tool. According to technical reports cited by Bleeping Computer, these vulnerabilities could have been used to conduct denial-of-service (DoS) attacks. The issue affected the Malware Protection Engine, a critical component responsible for inspecting and analyzing suspicious objects. The post "Microsoft patched critical vulnerabilities in Window…
Two vulnerabilities discovered in Microsoft Defender are already being exploited by malicious people. These have just been added to the official CISA fault catalog, they concern millions of Windows users who rely on the built-in antivirus as their main protection.
Microsoft Defender CVE-2026-41091 & CVE-2026-45498
Microsoft has confirmed active exploitation of two security vulnerabilities in its security ecosystem, identified as CVE-2026-41091 and CVE-2026-45498, both evaluated under the CVSS scoring system. The issues affect Microsoft Defender and have raised concerns due to confirmed in-the-wild exploitation and potential impact on enterprise systems. The first issue, CVE-2026-41091 (CVSS 7.8), is a privilege escalation vulnerability affecting Microsof…
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