🛠️ Left 4 Deadのアップデート履歴
開発元がSteamで公開した公式告知（パッチ、新コンテンツ、イベント）を時系列でまとめています。タイトルをクリックすると全文を読めます。
2026年6月
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6/30火🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead. - Fixed custom sprays not displaying for remote clients.
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6/26金🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead. - Fixed several exploits that could crash servers or remote players.
2025年8月
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8/23土🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead. - Block clients' ability to pause dedicated servers, unless the server operator has explicitly allowed it.
2025年1月
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1/18土🛠️ パッチ / アップデートLeft 4 Dead Update
An update has been released for Left 4 Dead. - Fixed exploits used to crash remote servers.
2024年12月
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12/3火🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead. - Fixed some exploits used to crash remote servers.
2024年10月
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10/26土🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead. - Fixed several crash and remote code execution exploits.
2024年6月
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6/13木🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead game and authoring tools: - Fixes for several crash and remote code execution exploits.
2024年5月
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5/2木🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead: - Fixed an exploit that could force votes to pass without notifying other players. - Added protections against malicious network packets. - Integrated seve…
2024年1月
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1/20土🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead: - Fixed several vulnerabilities and exploits, reported via HackerOne. - Localization fixes, added Latin American Spanish.
2022年2月
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2/1火🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead. - Fixed a potential remote code execution exploit through malformed file uploads. Reported via HackerOne.
2021年8月
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8/11水🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead - Fixed Authoring Tools failing to write to disk
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8/10火🛠️ パッチ / アップデートLeft 4 Dead - Update
An update has been released for Left 4 Dead - Fixed several potential RCE exploits.
出典：Steam公式告知（6～24時間ごとに更新）。タイトルと概要の著作権は各開発元に帰属します。