A Windows vulnerability that was reported to Microsoft, published as “0day” before the official patch was available, micropatched by us one day later, subsequently patched by Microsoft, found to be incorrectly patched. Microsoft patched CVE-2018-8423 eighteen days after we had micropatches it. Their official patch turned out to be incomplete so we re-micropatched it. Microsoft’s October update actually re-opened the vulnerability for 0patch users who were previously protected by our micropatch.”]
Source: https://blog.0patch.com/2018/10/patching-re-patching-and-meta-patching.html