CVE-2018-8246

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CVE

An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka

An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka "Microsoft Excel Information Disclosure Vulnerability." This affects Microsoft Excel Viewer, Microsoft Office, Microsoft Excel.

MEDIUM · CVSS 5.5 EPSS 0.25474

Schedule remediation

EPSS ≥ 0.10 - elevated exploitation probability
EPSS percentile: top 4% of all CVEs by exploitation likelihood

Sigma rules13 YARA rules0

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Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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Affected Products & Versions

microsoft excelall versions
microsoft excel viewerall versions
microsoft officeall versions
microsoft office compatibility packall versions

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Sigma Hunt Rules

Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.

producthighSuspicious Microsoft Office Child Process - MacOS

producthighCode Executed Via Office Add-in XLL File

producthighPotential Persistence Via Microsoft Office Add-In

producthighPotential Persistence Via Microsoft Office Startup Folder

producthighFile With Uncommon Extension Created By An Office Application

producthighOffice Macro File Creation From Suspicious Process

Show all 13 top matchesproducthighUncommon File Created In Office Startup Folder
producthighPotentially Suspicious Office Document Executed From Trusted Location
producthighPython Function Execution Security Warning Disabled In Excel
producthighPotential Excel.EXE DCOM Lateral Movement Via ActivateMicrosoftApp
producthighPotential Persistence Via Excel Add-in - Registry
producthighPython Function Execution Security Warning Disabled In Excel - Registry
productmediumMicrosoft Excel Add-In Loaded From Uncommon Location

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Scoring & Timeline

5.5

MEDIUM · CVSS v3.0 · secure@microsoft.com

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD14 Jun 2018 · 12:29 PM

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

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Vendor Advisories

msrcCVE-2018-8246Information Disclosure

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://www.securityfocus.com/bid/104322Third Party AdvisoryVDB Entry

http://www.securitytracker.com/id/1041109Third Party AdvisoryVDB Entry

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8246PatchVendor Advisory

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