Jump to content


Tech Alert: Email Security Gateway Resolves Issue with Virus Definition

ESG Email Security Gateway Spam Firewall Virus Definition

This topic has been archived. This means that you cannot reply to this topic.
No replies to this topic

#1 Tanushree Chellam

Tanushree Chellam

    Product Manager

  • Moderators
  • 23 posts

Posted 10 August 2016 - 04:56 PM

At 9.30pm PT on Tuesday Aug 9, 2016, Barracuda Networks issued a virus definition,, which incorrectly classified .doc files as viruses (Win.Exploit.CVE_2016_3316-1). This means that all emails with .doc filetype attachments were blocked as they were identified as viruses. There was an in between definition version that affected the virus scanning functionality, but those impacted had emails that were deferred for a short period of time, with no loss of emails. By 2.57am PT on Wednesday Aug 10, 2016, virus definition version or higher, removed the signature from our database, and fixed all issues.


All ESGs with auto-update enabled for Energize Updates should have the update definitions pushed out. Please go to Advanced -> Energize Updates to check which virus definition you have. You can force the update of the virus definitions manually, if you are not seeing a version number of at least or higher. 


Customers who believe they may have been affected by the virus definition should search the Message Log for Word Documents of format .doc only (not .docx) during that time frame and ask the sender to retry sending the message.  We apologize for the inconvenience.

Tanu Chellam

Content Security & Cloud Micro-service Projects