Microsoft plans to release 7 security bulletins as part of its July 11 Patch Tuesday, the company said Thursday. Four of the updates are for Windows, with the most severe being rated as "critical." Three other patches are directed at Office, also with a maximum severity of "critical."
Although Microsoft does not disclose in advance what flaws are to be patched, two vulnerabilities in Excel are likely to be among the fixes. One issue relates to maliciously crafted spreadsheet files that could lead to a full system compromise, while the other relates to hyperlinks in Excel documents.
Two security flaws affecting Internet Explorer were also reported last week, including a cross-site scripting issue where an attacker could view information in an open browser window from another that is visiting a malicious site.