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Microsoft Issues Urgent Update to Combat UEFI Vulnerabilities

6/12/2025

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Summary

Microsoft Secures Boot

In June 2025, security researchers uncovered two alarming vulnerabilities, CVE-2025-3052 and CVE-2025-4275, that could undermine Secure Boot on UEFI systems, potentially enabling malware to infiltrate before the operating system even starts. In response, Microsoft swiftly updated its Secure Boot revocation database, urging users to install firmware updates to safeguard their devices.

Summary

Microsoft Patches Vulnerabilities

In June 2025, Microsoft took decisive action by patching 67 vulnerabilities, notably a critical zero-day (CVE-2025-33053) that the Stealth Falcon group exploited against a Turkish defense firm. Meanwhile, Adobe addressed over 250 flaws in its software. Experts stress the urgency for organizations to implement these updates to safeguard against potential threats.

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Microsoft Secures Boot

In June 2025, security researchers uncovered two alarming vulnerabilities, CVE-2025-3052 and CVE-2025-4275, that could undermine Secure Boot on UEFI systems, potentially enabling malware to infiltrate before the operating system even starts. In response, Microsoft swiftly updated its Secure Boot revocation database, urging users to install firmware updates to safeguard their devices.

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