Open/Save actions for Excel 4 workbooks must be blocked.

From Microsoft Excel 2013 STIG

SV-53611r1_rule Open/Save actions for Excel 4 workbooks must be blocked.

Vulnerability discussion

This setting specifies whether users can open, view, edit, or save files saved in the specified format. Enabling block of the specified format mitigates zero-day security attacks (which are attacks that occur between the time that a vulnerability becomes publicly known and a software update or service pack is available) by temporarily preventing users from opening specific types of files and to prevent a user from opening files that have been saved in earlier and pre-release (beta) Microsoft Office formats.

Check content

Fix text

Set the policy value for User Configuration -> Administrative Templates -> Microsoft Excel 2013 -> Excel Options -> Security -> Trust Center -> File Block Settings "Excel 4 workbooks" to "Enabled: Open/Save blocked, use open policy".

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