CVE-2018-4253

CVE-2018-4253 is a local privilege escalation vulnerability affecting macOS versions prior to 10.13.5, specifically within the AMD component. A crafted application can exploit this weakness to bypass memory-read restrictions or trigger a denial of service through an out-of-bounds read of kernel memory. Rated Medium severity (CVSS 5.5), it requires local access and user interaction to exploit, with potential for high confidentiality impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.