Microsoft Releases April 2025 Patches

Typewriter with "Update" typed on the paper

Microsoft has released software updates as part of its April 2025 Patch Tuesday. The updates fix 134 security vulnerabilities in total, including 1 zero-day vulnerability that is being actively exploited.

The breakdown of the vulnerabilities are as follows:

  • 49 privilege escalation

  • 9 security feature bypass

  • 31 remote code execution

  • 17 information disclosure

  • 14 denial of service

  • 3 spoofing

The actively exploited vulnerabilities are as follows:

  • CVE-2025-29824 - vulnerability in Windows Common Log File System Driver that can lead to elevation of privilege

Why You Should Care?

Zero-day vulnerabilities are vulnerabilities where a flaw has been identified but there was no fix for the flaw, which means attackers will try to exploit as many targets as possible before users fix the vulnerability. This makes it extra dangerous, and needs to be addressed as soon as possible.

In this case, one zero-day vulnerabilities are already being exploited, which means it is only a matter of time before the attackers compromise your business. Now that patches are available, it is critical to apply the patches as soon as possible to avoid getting compromised.

What Should You Do?

  • Test the patches ASAP at your organization, and make sure it does not break any business applications

  • Prioritize patching the actively exploited zero-day

  • Roll out the rest of the Patch Tuesday updates

References

  • https://www.bleepingcomputer.com/news/microsoft/microsoft-april-2025-patch-tuesday-fixes-exploited-zero-day-134-flaws/

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