# CVE-2016-5180: Node.js 4: Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote…

CVE-2016-5180 is fixed in Node.js 4 on 1 platform by Node.js 4 4.6.1 (version 4.6.1), released October 18, 2016. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2016-5180
- Priority: Urgent
- CVSS: 9.8
- EPSS: 0.0865
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 3, 2016
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2016-5180

## Description

Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly execute arbitrary code via a hostname with an escaped trailing dot.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Node.js 4 | 4.6.1 | [Node.js 4 4.6.1](https://patchblox.com/security/data/fix/windows-app/openjs.nodejs.4-4.6.1.md) | Oct 18, 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo