The installation of Sophos PureMessage for Microsoft Exchange 3.0 before 3.0.2, when both anti-virus and anti-spam are supported, does not create or launch the associated scan engines when the system is under heavy load, which has unspecified impact, probably remote bypass of scanner protection or a denial of service (message loss or delay).
Link | Tags |
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https://exchange.xforce.ibmcloud.com/vulnerabilities/52926 | vdb entry |
http://www.sophos.com/support/knowledgebase/article/44385.html | patch vendor advisory |