Every old version of Waterfox contains known security holes that have been fixed in newer releases. For example, Waterfox 56.x is vulnerable to:
Switch to Pale Moon for active security patches. Only use Waterfox old version if Pale Moon breaks your specific extension. waterfox browser old version
For most enthusiasts searching for an "old version," Waterfox Classic is the intended target. While the modern Waterfox (G-series) keeps up with the latest web standards, Waterfox Classic is frozen in time on a modified Gecko platform. Every old version of Waterfox contains known security
: The primary home for the legacy branch. It is based on an older Gecko engine that still supports XPCOM and XUL add-ons that modern Firefox has removed. For most enthusiasts searching for an "old version,"
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