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CVE-2018-8598

• Severity: medium (CVSS 4.7 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-12-12 · updated 2026-06-17

Description

An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka "Microsoft Excel Information Disclosure Vulnerability." This affects Office 365 ProPlus, Microsoft Office, Microsoft Excel. This CVE ID is unique from CVE-2018-8627.

Affected products

• Microsoft Excel 2013 Service Pack 1: 2010-sp2, 2013-sp1, 2016
• Microsoft Office: 2019
• Microsoft Office 365 ProPlus: all versions
• Microsoft Excel 2013 Service Pack 1: 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) (+1)
• Microsoft Office: 2019 for 32-bit editions, 2019 for 64-bit editions

References

• http://www.securityfocus.com/bid/106102
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8598
• http://www.securityfocus.com/bid/106102
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8598

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