Apple released today Safari 7.0.4 for OS X Mavericks and Safari 6.1.4 for OS X Mountain Lion and Lion. The updates were issued to address a significant memory corruption issue in the WebKit engine powering Apple’s browser, and an issue with handling of unicode characters that could be exploited. Both Safari 7.0.4 and 6.1.4 can be updated through the Software Update mechanism int he Mac App Store.