April brings a shower of vulnerabilities including 113 CVEs resolved by Microsoft. There are three known exploited vulnerabilities that affect the Windows OS that you will want to tend to first. Oracle has also released their quarterly Critical Patch Update (CPU) which includes updates for many products including Java SE.April brings a shower of vulnerabilities including 113 CVEs resolved by Microsoft. There are three known exploited vulnerabilities that affect the Windows OS that you will want to tend to first. Oracle has also released their quarterly Critical Patch Update (CPU) which includes updates for many products including Java SE.