# CVE-2017-8665: Xamarin.iOS Elevation Of Privilege Vulnerability

CVE-2017-8665 is fixed in Xamarin.iOS on 1 platform by KB4037359 (version ), released August 14, 2017. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2017-8665
- Priority: High
- CVSS: n/a (Important)
- EPSS: 0.0435
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Unlikely
- Published: Aug 14, 2017
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8665

## Description

<p>An elevation of privilege vulnerability exists when the Xamarin.iOS update component improperly handles directories and binaries.</p> <p>An attacker who successfully exploited this vulnerability could run arbitrary code as root. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Only systems running macOS are affected by this vulnerability.</p> <p>To exploit this vulnerability, an attacker would have to log on to an affected system and create a folder at a particular location. which could be used by another process running with elevated privileges.</p> <p>The security update addresses the vulnerability by correcting how the Xamarin.iOS update component handles directories and binaries.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Xamarin.iOS |  | [KB4037359](https://patchblox.com/security/data/fix/microsoft/kb4037359.md) | Aug 14, 2017 |

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Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo