# CVE-2017-11774: Microsoft Outlook Security Feature Bypass Vulnerability

CVE-2017-11774 is fixed in 7 products on 1 platform, first by KB4011196, released October 10, 2017. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/cve/CVE-2017-11774
- Priority: Patch now
- CVSS: n/a (Important)
- EPSS: 0.5963
- CISA KEV: listed Nov 3, 2021, federal due date May 3, 2022
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Oct 10, 2017
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-11774

## Description

<p>A security feature bypass vulnerability exists when Microsoft Outlook improperly handles objects in memory. An attacker who successfully exploited the vulnerability could execute arbitrary commands.</p> <p>In a file-sharing attack scenario, an attacker could provide a specially crafted document file designed to exploit the vulnerability, and then convince users to open the document file and interact with the document.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Outlook handles objects in memory.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft Outlook 2010 Service Pack 2 (32-bit editions) |  | [KB4011196](https://patchblox.com/security/data/fix/microsoft/kb4011196.md) | Oct 10, 2017 |
| Microsoft | Microsoft Outlook 2010 Service Pack 2 (64-bit editions) |  | [KB4011196](https://patchblox.com/security/data/fix/microsoft/kb4011196.md) | Oct 10, 2017 |
| Microsoft | Microsoft Outlook 2013 RT Service Pack 1 |  | [KB4011178](https://patchblox.com/security/data/fix/microsoft/kb4011178.md) | Oct 10, 2017 |
| Microsoft | Microsoft Outlook 2013 Service Pack 1 (32-bit editions) |  | [KB4011178](https://patchblox.com/security/data/fix/microsoft/kb4011178.md) | Oct 10, 2017 |
| Microsoft | Microsoft Outlook 2013 Service Pack 1 (64-bit editions) |  | [KB4011178](https://patchblox.com/security/data/fix/microsoft/kb4011178.md) | Oct 10, 2017 |
| Microsoft | Microsoft Outlook 2016 (32-bit edition) |  | [KB4011162](https://patchblox.com/security/data/fix/microsoft/kb4011162.md) | Oct 10, 2017 |
| Microsoft | Microsoft Outlook 2016 (64-bit edition) |  | [KB4011162](https://patchblox.com/security/data/fix/microsoft/kb4011162.md) | Oct 10, 2017 |

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Data as of 2026-11-07T12:40:37Z 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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