defender is telling me to update an already updated wordpress

Hi,
Defender gave me the vulnerability nfo that i'm pasting below but wordpress is saying that i'm already running the latest version.

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Minute Mobile Emissions
11 Plugin Update
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FILE SCANNING NEW SCAN

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2
File scanning issues need attention
May 11, 2017 4:08 pm
Last scan
WordPress Core 1
Plugins & Themes 1
Suspicious Code
Issues 2
Ignored
Settings
Reporting
ISSUES 2
Defender has found potentially harmful files on your website. In many cases, the security scan will pick up harmless files, but in some cases you may wish to remove the files listed below that look suspicious.
Ignore
APPLY2 Results
Suspicious File Issue
favicon.ico
/home/bnmpro5/public_html/minuteemissions/favicon.ico
Unknown file in WordPress core
WordPress Vulnerability
Version: 4.7.4
WordPress 2.3-4.7.4 - Host Header Injection in Password Reset
Vulnerability type: UNKNOWN
This bug has been fixed in version:

Ignore
APPLY2 Results
ISSUE DETAILS
×
WordPress WordPress Vulnerability
Version Version: 4.7.4
Vulnerability found in this version:
WordPress 2.3-4.7.4 - Host Header Injection in Password Reset
Vulnerability type: UNKNOWN
This bug has been fixed in version:
There’s a newer version available that fixes this issue. We recommend updating to the latest release.
UPDATE