# Microsoft April 2021 patches address actively-exploited flaw

Published: 2021-04-13 · Severity: elevated
Canonical: https://vorant.io/reports/4ca7c971-5b9d-5292-98ba-5b73fb563135/microsoft-april-2021-patches-address-actively-exploited-flaw

> Microsoft publishes patches for April 2021; CVE-2021-28310 is confirmed actively exploited and requires immediate patching.

On April 14, 2021, Microsoft released security patches addressing multiple vulnerabilities in Microsoft products. Of these, CVE-2021-28310 has been confirmed by Microsoft to be actively exploited in the wild, posing an immediate risk of further compromise. Affected systems could experience application crashes or complete system compromise, allowing attackers to take control of compromised machines. The alert emphasizes urgent application of patches to mitigate ongoing exploitation. Defenders should prioritize deployment of the April 2021 Microsoft security updates, with particular emphasis on CVE-2021-28310 given its active exploitation status.

## Mentioned in this report

- Vulnerabilities: CVE-2021-28310 (KEV)

Source reporting: https://www.ipa.go.jp/archive/security/security-alert/2021/20210414-ms.html

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