Microsoft Exchange contains a flaw that may allow a remote attacker to execute arbitrary code or cause a denial of service. The flaw is due to the SMTP server's improper handling of XEXCH50 verb requests. If an un-authenticated attacker issues a specially-crafted extended verb request, it may exhaust the available memory of the server or in some cases, allow the execution of arbitrary code.
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This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.