CVE-2026-19874

CVE-2026-19874 is a heap-based buffer overflow (CWE-122) in Konami's Metal Gear Online 3 (Steam AppID 287700, version 1.1.2.8 ), rated CVSS 9.1 Critical . The vulnerability resides in the parsing of Steam lobby metadata for the player-removal feature: the kick_num field is not validated against t...

EUVD-2026-64916

A heap-based buffer overflow vulnerability exists in Konami's Metal Gear Online 3, originating from improper validation of lobby data fields related to kicked players. The affected function processes a list of kicked player identifiers using the lobby data key "kicknum" to determine the number of...