Apple released Safari 8.0.4, Safari 7.1.1, and Safari 6.2.4 for Mountain Lion, Mavericks, and Yosemite on Tuesday.
The updates address 17 vulnerabilities in WebKit, all but one of which had to do with memory corruption issues, according to Apple's support page.
The memory flaws were address through improved memory handling. If users visited a maliciously crafted website it could have led to unexpected application termination or arbitrary code execution.
Another patched bug resolved an in issue with an inconsistent user interface that might have prevented users from discerning a phishing attack. Attackers could have exploited the flaw to misrepresent a URL. It was fixed through improved user interface consistency checks.