# Microsoft Office: An information disclosure vulnerability exists in the way that Microsoft Graphics…

CVE record · `CVE-2018-8427`

- **Identifiers:** `CVE-2018-8427`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** microsoft
- **Technologies:** [Microsoft Office](https://agentprime.io/advisories/technology/microsoft-office.md) · [Microsoft Office Word Viewer](https://agentprime.io/advisories/technology/microsoft-office-word-viewer.md) · [Microsoft Windows Server 2008](https://agentprime.io/advisories/technology/microsoft-windows-server-2008.md) · [Microsoft PowerPoint Viewer](https://agentprime.io/advisories/technology/microsoft-powerpoint-viewer.md) · [Microsoft Excel Viewer](https://agentprime.io/advisories/technology/microsoft-excel-viewer.md)
- **Published:** 10 Oct 2018
- **Updated:** 5 Aug 2024
- **Reviewed by a person:** No

Published by the CVE Program (CNA: microsoft) at 10 Oct 2018, 13:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Microsoft. Product: Microsoft Office.
  - affected: `2016 for Mac`
  - affected: `2019 for 32-bit editions`
  - affected: `2019 for 64-bit editions`
  - affected: `Compatibility Pack Service Pack 3`
- Vendor: Microsoft. Product: Microsoft Office Word Viewer.
  - affected: `Microsoft Office Word Viewer`
- Vendor: Microsoft. Product: Windows Server 2008.
  - affected: `32-bit Systems Service Pack 2`
  - affected: `32-bit Systems Service Pack 2 (Server Core installation)`
  - affected: `Itanium-Based Systems Service Pack 2`
  - affected: `x64-based Systems Service Pack 2`
  - affected: `x64-based Systems Service Pack 2 (Server Core installation)`
- Vendor: Microsoft. Product: Microsoft PowerPoint Viewer.
  - affected: `2007`
- Vendor: Microsoft. Product: Office.
  - affected: `365 ProPlus for 32-bit Systems`
  - affected: `365 ProPlus for 64-bit Systems`
- Vendor: Microsoft. Product: Microsoft Excel Viewer.
  - affected: `2007 Service Pack 3`

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.023, the 83rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 10 Oct 2018. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2018-8427](https://www.cve.org/CVERecord?id=CVE-2018-8427)
- [NVD: CVE-2018-8427](https://nvd.nist.gov/vuln/detail/CVE-2018-8427)

### References from the CNA

- <http://www.securitytracker.com/id/1041823> (vdb-entry, sectrack)
- <http://www.securityfocus.com/bid/105453> (vdb-entry, bid)
- <https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8427> (confirm)

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2018-8427>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2018-8427/>. Everything for agents: <https://agentprime.io/llms.txt>.