# CVE-2016-3245: Internet Explorer Security Feature Bypass Vulnerability

CVE-2016-3245 is fixed in 12 products on 1 platform, first by KB3170106, released July 12, 2016. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2016-3245
- Priority: Routine
- CVSS: 3.5 (Moderate)
- EPSS: 0.1469
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Unlikely
- Published: Jul 12, 2016
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2016-3245

## Description

<p>A restricted ports security feature bypass vulnerability exists for Internet Explorer. An attacker could take advantage of the vulnerability to trick a user into connecting to a remote system.</p> <p>To exploit the vulnerability, an attacker would have to either convince a user to visit a malicious website or inject malicious code into a compromised website.</p> <p>The update addresses the vulnerability by correcting how Internet Explorer validates URLs for restricted ports.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Internet Explorer 10 on Windows Server 2012 |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 11 on Windows 8.1 for 32-bit systems |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 11 on Windows 8.1 for x64-based systems |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 11 on Windows RT 8.1 |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 11 on Windows Server 2012 R2 |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 9 on Windows Vista Service Pack 2 |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |
| Microsoft | Internet Explorer 9 on Windows Vista x64 Edition Service Pack 2 |  | [KB3170106](https://patchblox.com/security/data/fix/microsoft/kb3170106.md) | Jul 12, 2016 |

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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