[Zope] Zope and security vulnerability: 20121106

Hi, is a standard Zope affected by this security vulnerability or only if Plone is installed: http://plone.org/products/plone/security/advisories/20121106-announcement The patch is replacing some basic classes therefore it looks to me that Zope itself without any Plone is vulnerable too. If so is there a Hotfix for Zope or new Zope version which fixes these bugs? Ciao Marcus