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Question

Rocket MV Basic - Log4J Vulnerability

  • September 15, 2026
  • 1 reply
  • 18 views

Leo Lin

Hi everyone,

Just a query, my company occasionally does sweeps on applications on end user devices to ensure there are no files within that are vulnerable to being attacked.

Recently they have marked Rocket MV Basic’s extension file, ls4b.jar as vulnerable, and want to know if this file is dependent on the application, and if there is a possibility to update this file, or if this file will be staying as it is?

Thank you.

1 reply

Christian Bristow
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Hello Leo,

The  ls4b.jar is the MVVS language server and the extension is dependent on it. What’s the vulnerability being highlighted?