For the next Tuesday, Microsoft announced to release 4 security bulletins on the monthly Patchday. 3 of the bulletins deal with security vulnerabilities which the company considers critical, 1 is about an important issue.
The vulnerabilities affect the Windows operating systems and Microsoft Office. All of the security holes allow for executing remote code which means that attackers can abuse them to compromise PCs by installing malware without much user intervention. As usual, Microsoft will release more details about the vulnerabilities on Patch Tuesday. Administrators should prepare to install the updates as soon as possible.