A weakness and multiple vulnerabilities have been reported in Mozilla Thunderbird and SeaMonkey, which can be exploited by malicious people to disclose potentially sensitive information, conduct spoofing attacks, bypass certain security restrictions, and compromise a user's system.
Microsoft Security Bulletin Advance Notification for February 2013. Microsoft has posted 5 Critical Bulletins and 7 Important Bulletins. Bulletins with the Maximum Severity Rating and Vulnerability Impact of "Critical" may allow remote execution of code. Microsoft will host a webcast to address customer questions on the security bulletins on February 13, 2013, at 11:00 AM Pacific Time (US & Canada).
A Critical Patch Update is a collection of patches for multiple security vulnerabilities. The Critical Patch Update for Java SE also includes non-security fixes. Critical Patch Updates are cumulative and each advisory describes only the security fixes added since the previous Critical Patch Update and Security Alert.