Synergy 3

v3.6.1 (May 11, 2026)

Bug fixes

• Fixed an intermittent error showing "core ipc read timeout after 2000 ms" caused by making many settings changes in rapid succession.
• Eliminated a local privilege escalation path that let unauthenticated users gain elevated system access (CVE-2026-41477).
• Patched a clipboard memory safety vulnerability that could be exploited to crash the program or run malicious code (CVE-2026-41476).
• Corrected a denial of service (DoS) vulnerability where a TLS server and its connected clients became unreachable when a non-TLS client attempted to connect (CVE-2026-44296).
• Stopped newer clients from being incorrectly rejected with an incompatibility error when connecting to the server.
• Updated bundled dependencies to current versions, including upstream security patches.

Enhancements

• Updated the underlying Synergy Core to version 1.20.1.

v3.6.0 (March 16, 2026)

Bug fixes

• Addressed an issue on macOS Tahoe 26 where the background service could remain running after the application was deleted.
• Fixed Core restarts during UAC prompts or login when the elevation setting was configured to Always.
• Restored compatibility between installations running v3.4 and v3.5, preventing failures caused by database format differences.
• Eliminated intermittent Core restarts and reconnect loops reported on macOS Tahoe.
• Fixed old background services continuing to run in the background on Windows after an update.
• Corrected EADDRINUSE (address already in use) error that prevented the service from starting on Linux.
• Resolved startup failures on Intel Macs running macOS 14.6 where the service would not launch.
• Resolved connection failures when adding a computer whose database version differed by one revision.
• Fixed drag-and-drop error messages appearing in older versions after connecting to a newer installation.
• Addressed Wayland compatibility on Arch Linux where GUI wouldn't start.
• Retry mechanism for macOS error message “failed to get permission status from os” which appears intermittently.
• Updated macOS installer disk image to restore on-screen installation instructions in the background artwork.