Outlook Express contains a flaw that may lead to an unauthorized information disclosure. The issue is triggered when the client is configured to break messages into muliple parts, which will disclose BCC: recipient information to all recipients resulting in a loss of confidentiality.
Classification
Location:
Remote / Network Access
Attack Type:
Information Disclosure
Impact:
Loss of Confidentiality
Exploit:
Exploit Unknown
Solution
Currently, there are no known workarounds or upgrades to correct this issue. However, Microsoft has released a patch to address this vulnerability.
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