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Vulnerability record · CVE-2018-8427 · published 10 October 2018

CVE-2018-8427: Microsoft excel viewer information exposure vulnerability

Microsoft · Excel Viewer

An information disclosure vulnerability exists in the way that Microsoft Graphics Components handle objects in memory, aka "Microsoft Graphics Components Information Disclosure Vulnerability." This affects Microsoft Office, Microsoft Office Word Viewer, Office 365 ProPlus, Windows Server 2008, Microsoft PowerPoint Viewer, Microsoft Excel Viewer.

5.5 CVSS 3.0 Medium EPSS 2.3% · top 17.4% CWE-200 · Information exposure
5.5CVSS 3.0 base score, v2 2.1
2.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

An information disclosure vulnerability exists in the way that Microsoft Graphics Components handle objects in memory, aka "Microsoft Graphics Components Information Disclosure Vulnerability." This affects Microsoft Office, Microsoft Office Word Viewer, Office 365 ProPlus, Windows Server 2008, Microsoft PowerPoint Viewer, Microsoft Excel Viewer.

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/105453 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041823 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8427 PatchVendor Advisory
http://www.securityfocus.com/bid/105453 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041823 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8427 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-8427), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.