CVE-2017-11465

CVE-2017-11465 is a critical denial-of-service vulnerability affecting Ruby 2.4.1, specifically within its UTF-8 parser. An unauthenticated attacker can exploit this remotely with low complexity by crafting a malicious Ruby script, potentially leading to a denial of service through invalid memory operations or other unspecified impacts, and possibly bypassing $SAFE protections. Despite its critical CVSS score of 9.8, there is no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.