ゼロデイ脆ぜい弱じゃく性せいゼロデイぜいじゃくせいMeanings1nounzero-day vulnerabilitycomputing›A software security flaw that is unknown to the vendor and for which no patch exists, leaving systems exposed. Often used in the context of zero-day attacks.See also: ゼロデイ攻撃このゼロデイ脆ぜい
