CVE-2018-8247

Microsoft Office Elevation of Privilege Vulnerability

CVE-2018-8247 is fixed in 2 products on 1 platform, first by KB4011026, released June 12, 2018. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
n/a
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0386
90th percentile

<p>An elevation of privilege vulnerability exists when Office Web Apps Server 2013 and Office Online Server fail to properly handle web requests. An attacker who successfully exploited this vulnerability could perform script/content injection attacks and attempt to trick the user into disclosing sensitive information.</p> <p>To exploit the vulnerability, an attacker could send an email message containing a malicious link to a user. Alternatively, an attacker could use a chat client to social engineer a user into clicking the malicious link. The user must click the malicious link for the vulnerability to be exploited.</p> <p>The security update addresses the vulnerability by correcting how Office Web Apps Server 2013 and Office Online Server validate web requests.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Office Online Server 2016 KB4011026 Jun 12, 2018
Microsoft Office Web Apps Server 2013 Service Pack 1 KB4022183 Jun 12, 2018