脆 弱 性(ぜいじゃくせい)

ぜいじゃくせい

noun

vulnerability; fragility

formaltechnicaltechnology

1. vulnerability; fragility; weakness

Being fragile or easily damaged; above all, a security flaw in software or a system that an attacker could exploit. Also used of weak points in finances, infrastructure, or ecosystems.

システムの脆弱性(ぜいじゃくせい)。

A system vulnerability.

新(あたら)しい脆弱性(ぜいじゃくせい)が発見(はっけん)された。

A new vulnerability has been discovered.

ソフトウェアの脆弱性(ぜいじゃくせい)を突(つ)いた攻撃(こうげき)を防(ふせ)ぐため、早(はや)めにアップデートしてください。

Please update promptly to guard against attacks that exploit software vulnerabilities.

Etymology

脆弱(ぜいじゃく) (fragile, weak) + 性(せい) (-ness).

Common collocations

脆弱性(ぜいじゃくせい)を突(つ)く (to exploit a vulnerability)
脆弱性(ぜいじゃくせい)を修正(しゅうせい)する (to fix a vulnerability)
セキュリティ上(じょう)の脆弱性(ぜいじゃくせい) (a security vulnerability)
財政(ざいせい)の脆弱性(ぜいじゃくせい) (financial fragility)

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A technical, written word; in conversation 弱(よわ)いところ or 弱点(じゃくてん) is more natural outside IT.

general

Added 2026.10.12 4:24 · Revised 2026.10.12 4:27

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