脆弱性 ぜいじゃくせい Meanings Noun vulnerability; weakness; fragility vulnerability; security hole Kanji 脆 brittle; fragile; easy to beat. Read as ゼイ. 弱 weak. Read as ジャク. 性 nature. Read as セイ. Words containing 脆弱性 ゼロデイ脆弱性 (ゼロデイぜいじゃくせい) zero-day vulnerability Jinuma: Japanese Dictionary · Word lists