# CVE-2018-0950: Microsoft Office Information Disclosure Vulnerability

CVE-2018-0950 is fixed in 11 products on 1 platform, first by KB4018357, released April 10, 2018. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2018-0950
- Priority: Urgent
- CVSS: n/a (Important)
- EPSS: 0.0893
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation More Likely
- Published: Apr 10, 2018
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-0950

## Description

<p>An information disclosure vulnerability exists when Office renders Rich Text Format (RTF) email messages containing OLE objects when a message is opened or previewed. This vulnerability could potentially result in the disclosure of sensitive information to a malicious site.</p> <p>To exploit the vulnerability, an attacker would have to send an RTF-formatted email to a user and convince the user to open or preview the email. A connection to a remote SMB server could then be automatically initiated, enabling the attacker to brute-force attack the corresponding NTLM challenge and response in order to disclose the corresponding hash password.</p> <p>The security update addresses the vulnerability by correcting how Office processes OLE objects.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft Office 2010 Service Pack 2 (32-bit editions) |  | [KB4018357](https://patchblox.com/security/data/fix/microsoft/kb4018357.md) | Apr 10, 2018 |
| Microsoft | Microsoft Office 2010 Service Pack 2 (64-bit editions) |  | [KB4018357](https://patchblox.com/security/data/fix/microsoft/kb4018357.md) | Apr 10, 2018 |
| Microsoft | Microsoft Office Compatibility Pack Service Pack 3 |  | [KB4018354](https://patchblox.com/security/data/fix/microsoft/kb4018354.md) | Apr 10, 2018 |
| Microsoft | Microsoft Word 2007 Service Pack 3 |  | [KB4018355](https://patchblox.com/security/data/fix/microsoft/kb4018355.md) | Apr 10, 2018 |
| Microsoft | Microsoft Word 2010 Service Pack 2 (32-bit editions) |  | [KB4018359](https://patchblox.com/security/data/fix/microsoft/kb4018359.md) | Apr 10, 2018 |
| Microsoft | Microsoft Word 2010 Service Pack 2 (64-bit editions) |  | [KB4018359](https://patchblox.com/security/data/fix/microsoft/kb4018359.md) | Apr 10, 2018 |
| Microsoft | Microsoft Word 2013 RT Service Pack 1 |  | [KB4018347](https://patchblox.com/security/data/fix/microsoft/kb4018347.md) | Apr 10, 2018 |
| Microsoft | Microsoft Word 2013 Service Pack 1 (32-bit editions) |  | [KB4018347](https://patchblox.com/security/data/fix/microsoft/kb4018347.md) | Apr 10, 2018 |
| Microsoft | Microsoft Word 2013 Service Pack 1 (64-bit editions) |  | [KB4018347](https://patchblox.com/security/data/fix/microsoft/kb4018347.md) | Apr 10, 2018 |
| Microsoft | Microsoft Word 2016 (32-bit edition) |  | [KB4018339](https://patchblox.com/security/data/fix/microsoft/kb4018339.md) | Apr 10, 2018 |
| Microsoft | Microsoft Word 2016 (64-bit edition) |  | [KB4018339](https://patchblox.com/security/data/fix/microsoft/kb4018339.md) | Apr 10, 2018 |

---

Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.