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entry for Security Update for Windows XP (KB923694)
. This cumulative security update for Windows XP addresses a vulnerability in Outlook Express that could allow remote code execution.A remote code execution vulnerability in a component of Outlook Express could allow an attacker who sent a Windows Address Book file to a user of an affected system to take complete control of the system.
If a user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less affected than users who operate with administrative user rights.