CVE-2021-45977: JetBrains Clion

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

JetBrains IntelliJ IDEA 2021.3.1 Preview, IntelliJ IDEA 2021.3.1 RC, PyCharm Professional 2021.3.1 RC, GoLand 2021.3.1, PhpStorm 2021.3.1 Preview, PhpStorm 2021.3.1 RC, RubyMine 2021.3.1 Preview, RubyMine 2021.3.1 RC, CLion 2021.3.1, WebStorm 2021.3.1 Preview, and WebStorm 2021.3.1 RC (used as Remote Development backend IDEs) bind to the 0.0.0.0 IP address. The fixed versions are: IntelliJ IDEA 2021.3.1, PyCharm Professional 2021.3.1, GoLand 2021.3.2, PhpStorm 2021.3.1 (213.6461.83), RubyMine 2021.3.1, CLion 2021.3.2, and WebStorm 2021.3.1.

Affected products

• JetBrains Clion: version 2021.3.1 only
• JetBrains Goland: version 2021.3.1 only
• JetBrains Intellij Idea: version 2021.3.1 only
• JetBrains Phpstorm: version 2021.3.1 only
• JetBrains Pycharm: version 2021.3.1 only
• JetBrains Rubymine: version 2021.3.1 only
• JetBrains Webstorm: version 2021.3.1 only

Published 2022-02-25. Last modified 2026-06-17.