Release v1.15.9 / 5.70.9

[DavidXanatos]

Release Notes

Sandboxie Plus 1.15.9 delivers a robust update centered on security, stability, and compatibility—particularly for users of modern web browsers and those prioritizing privacy and sandbox integrity.

A key highlight is the improved compatibility with Firefox 137 Nightly and later, resolving previous hooking issues that caused instability or functional limitations. Firefox now runs smoothly within sandboxed environments once again.

Security enhancements are another major focus. This release addresses a potential IP leakage vulnerability affecting dual-stack IPv4/IPv6 setups when only one proxy type was configured. Connections now fail gracefully if no proxy is set for the relevant IP type, effectively preventing unintentional bypasses and preserving user anonymity—a critical improvement for users relying on VPNs or proxies.

Additionally, a serious local privilege escalation vulnerability tied to the HostInjectDll mechanism has been patched, thanks to responsible disclosure. This fix strengthens Sandboxie's role as a secure execution layer.

For advanced users, a new debug option OpenAllSysCalls=y has been added, allowing unrestricted system call access for testing purposes. However, due to its permissive nature, it should be used with caution.

Among the usability improvements, users can now duplicate sandboxes and their contents directly from the UI, streamlining environment management. The update also introduces a new developer certificate type that disables user-mode component verification for advanced use cases. This node-locked certificate is available at no additional cost to existing Contributor or Eternal/Huge certificate holders upon request.

Overall, version 1.15.9 brings a thoughtful balance of new features, critical fixes, and user-focused enhancements, reinforcing Sandboxie Plus as a powerful tool for secure application isolation.

For a full list of changes please review the change log.

Known Issue

Warning

Please note that SbieShellExt.dll is missing in 1.15.9, which will be fixed in 1.15.10. SbieShellExt.dll is used for the shell integration, so don't worry if you can't start applications sandboxed from the explorer by right-clicking on it.

You can support the project through donations, any help will be greatly appreciated.

If you have issues with an update installation, just uninstall the previous version keeping the sandboxie.ini and reinstall the new build.

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This discussion was created from the release Release v1.15.9 / 5.70.9.

[BilleBarrett]

Sorry to be a bother but I upgraded to 15.9 and I seem to have lost my sound from all 3 browsers
did I set something wrong, I need sound to run my business
Thank you

[AgentSam]

Also, it really might be a good idea to add a warning to this release, about the following issue:

• SbieShellExt.dll missing in 1.15.9

This is marked as "fixed" in the 1.15.10 release notes, but... since this latest release still has the issue, people should be aware of it.

Related discussion can also be found at:

• https://forum.xanasoft.com/threads/sandboxie-plus-1-15-9-setup-wizard-page-shell-integration-typos.2799/
• https://forum.xanasoft.com/threads/sandboxie-plus-1-15-9-fresh-install-sbieshellext-dll-not-found.2800/#post-11254

[githubusername2024]

Restarting OS fixed it.