# CVE-2017-0242: Microsoft ActiveX Information Disclosure Vulnerability

CVE-2017-0242 is fixed in 10 products on 1 platform, first by KB4019263, released May 9, 2017. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2017-0242
- Priority: Routine
- CVSS: 4.2 (Important)
- EPSS: 0.0794
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: May 9, 2017
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-0242

## Description

<p>An information disclosure vulnerability exists in the way some ActiveX objects are instantiated. An attacker who successfully exploited this vulnerability could gain access to protected memory contents.</p> <p>To exploit this vulnerability, an attacker would need to convince a user to open a malicious document that could then instantiate the vulnerable object. This security update addresses the vulnerability by correcting how these objects are instantiated.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 7 for 32-bit Systems Service Pack 1 |  | [KB4019263](https://patchblox.com/security/data/fix/microsoft/kb4019263.md) | May 9, 2017 |
| Microsoft | Windows 7 for 32-bit Systems Service Pack 1 |  | [KB4019264](https://patchblox.com/security/data/fix/microsoft/kb4019264.md) | May 9, 2017 |
| Microsoft | Windows 7 for x64-based Systems Service Pack 1 |  | [KB4019263](https://patchblox.com/security/data/fix/microsoft/kb4019263.md) | May 9, 2017 |
| Microsoft | Windows 7 for x64-based Systems Service Pack 1 |  | [KB4019264](https://patchblox.com/security/data/fix/microsoft/kb4019264.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 |  | [KB4019263](https://patchblox.com/security/data/fix/microsoft/kb4019263.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 |  | [KB4019264](https://patchblox.com/security/data/fix/microsoft/kb4019264.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB4019263](https://patchblox.com/security/data/fix/microsoft/kb4019263.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB4019264](https://patchblox.com/security/data/fix/microsoft/kb4019264.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |  | [KB4019263](https://patchblox.com/security/data/fix/microsoft/kb4019263.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) |  | [KB4019264](https://patchblox.com/security/data/fix/microsoft/kb4019264.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 |  | [KB4018927](https://patchblox.com/security/data/fix/microsoft/kb4018927.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) |  | [KB4018927](https://patchblox.com/security/data/fix/microsoft/kb4018927.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 |  | [KB4018927](https://patchblox.com/security/data/fix/microsoft/kb4018927.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 |  | [KB4018927](https://patchblox.com/security/data/fix/microsoft/kb4018927.md) | May 9, 2017 |
| Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) |  | [KB4018927](https://patchblox.com/security/data/fix/microsoft/kb4018927.md) | May 9, 2017 |

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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

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