Norton Insight gives bcmihvui64.dll "poor" after driver update

Updated  driver for Broadcom 802.11n network adapter and Norton Insight shows this:

Filename: bcmihvui64.dll
Full Path: c:\windows\system32\bcmihvui64.dll

Details
Stability Unknown,  Few Users,  Mature,  Poor

Origin
Downloaded from 
Unknown

Activity
Actions performed: Suspicious actions performed: None

Developers 
Microsoft Corporation

Version 
6.30.223.259

Identified 
4/3/2015 at 7:56:15 PM

Last Used 
Not Available

Startup Item 
No
Unknown
This program crash history is not known.

Few Users
Fewer than 50 users in the Norton Community have used this file.

Mature
This file was released more than 31 days 3 months ago.

Poor
There are some indications that this file is untrustworthy.

Source File:
bcmihvui64.dll
File Thumbprint - SHA:
cf9c824c1c412a78fe9cf1d2cf5c0469fd2b7f7397bb29548ec0e703407b150f
File Thumbprint - MD5:
1c34b0fa6cbf16fbac256dbb58aa62e1