What’s Vulnerable › Vulnerabilities

CVE-2018-8378

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-08-15 · updated 2026-06-17
• Weakness: CWE-125

Description

An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory, aka "Microsoft Office Information Disclosure Vulnerability." This affects Word, Microsoft SharePoint Server, Microsoft Office Word Viewer, Microsoft Excel Viewer, Microsoft SharePoint, Microsoft Office.

Affected products

• Microsoft Excel Viewer: 2007-sp3
• Microsoft Office: 2010-sp2, 2013-sp1, 2016
• Microsoft Office Compatibility Pack: all versions
• Microsoft Office Web Apps: 2010-sp2, 2013-sp1
• Microsoft Office Word Viewer: all versions
• Microsoft Sharepoint Enterprise Server 2013: all versions
• Microsoft Sharepoint Enterprise Server 2016: all versions
• Microsoft SharePoint Server: 2013-sp1
• Microsoft Word Automation Services: all versions
• Microsoft Excel Viewer: 2007 Service Pack 3
• Microsoft Office: 2010 Service Pack 2 (32-bit editions), 2010 Service Pack 2 (64-bit editions), 2013 RT Service Pack 1, 2013 Service Pack 1 (32-bit editions), 2013 Service Pack 1 (64-bit editions), 2016 (32-bit edition) (+5)
• Microsoft Office Word Viewer: Microsoft Office Word Viewer
• Microsoft Corporation SharePoint: Enterprise Server 2013 Service Pack 1, Enterprise Server 2016
• Microsoft SharePoint Server: 2013 Service Pack 1
• Microsoft Word for Android: Automation Services on Microsoft SharePoint Server 2010 Service Pack 2

References

• http://www.securityfocus.com/bid/104996
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8378
• http://www.securityfocus.com/bid/104996
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8378

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