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Microsoft on Tuesday released the first batch of security patches for 2021 with fixes for 83 documented security vulnerabilities, including a “critical” bug in the Defender security product that’s being actively exploited.
Security experts are urging security response personnel to pay special attention to CVE-2021-1647, which describes a remote code execution flaw in Microsoft Defender, the company’s flagship anti-malware product.
The Microsoft Defender update comes with an “exploitation detected” warning and was shipped via the Microsoft Malware Protection Engine, a utility used to clean-up remnants of known malware attacks.