CVE-2016-4696

CVE-2016-4696 describes a NULL pointer dereference vulnerability in AppleEFIRuntime within Apple OS X before version 10.12. This flaw allows an attacker, via a crafted application, to execute arbitrary code with elevated privileges or trigger a denial of service. With a CVSS score of 7.8 (High), it requires user interaction (UI:R) and local access (AV:L) for exploitation, potentially leading to high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has received minimal community discussion.