Microsoft has revealed that Internet Explorer 9 has been incremented to update revision 1.

The software giant detailed the changes in a blog post on Tuesday. Microsoft release a June 2011 Cumulative Security Update for Internet Explorer on Tuesday that resolves seven vulnerabilities in Internet Explorer.The vulnerabilities could allow remote code execution if a user visits a malicious, specially crafted Web page using IE.

The security update is rated critical for Internet Explorer 6, 7,8 and 9. Despite the version jump, the major and minor version numbers remain 9.0. “Today we increment the update revision to 1,” explained Microsoft Internet Explorer program manager Vishwac Sena Kannan. Microsoft also confirmed there is no change to the User-Agent string or other platform versioning information.