# CVE-2018-14847: MikroTik Router OS Directory Traversal Vulnerability

Source: https://junglewise.ai/threats/cve-2018-14847-mikrotik-router-os-directory-traversal-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-12-01. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2018-14847 · Severity: critical · CVSS 9.1 · Exploited in the wild · Published 2021-12-01

A directory traversal vulnerability in the WinBox interface of MikroTik RouterOS allows unauthenticated remote attackers to read arbitrary files and authenticated attackers to write arbitrary files. The vulnerability has been actively exploited in the wild.

Technologies: [MikroTik RouterOS](https://junglewise.ai/threats/technologies/routeros). Vendors: [MikroTik](https://junglewise.ai/threats/vendors/mikrotik).

## Quick answers

**Is CVE-2018-14847 exploited in the wild?** Yes. CVE-2018-14847 is known to be exploited in the wild, first recorded on 1 December 2021. Treat it as urgent.

**How severe is CVE-2018-14847?** Critical severity, with a CVSS score of 9.1, published 1 December 2021.

**Which products and versions are affected?** MikroTik RouterOS through 6.42.

**Is there a fix for CVE-2018-14847?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2018-14847 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2018-14847?** Check whether you run MikroTik RouterOS. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- MikroTik RouterOS through 6.42

## Timeline

- 2018-08-02: disclosed: Initial vulnerability disclosure and exploit availability (based on reference dates)
- 2021-12-01: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

## Related threats

- [MikroTik RouterOS session token replay authentication bypass in WebFig](https://junglewise.ai/threats/cve-2026-89035-mikrotik-routeros-through-7-24-5-contains-a-session-token-replay)
- [MikroTik RouterOS integer overflow in ipt_SAME module](https://junglewise.ai/threats/cve-2026-112158-a-weakness-has-been-identified-in-mikrotik-routeros-up-to-6-40-5)
- [MikroTik RouterOS WinBox incorrect authorization in authentication](https://junglewise.ai/threats/cve-2026-103903-an-incorrect-authorization-vulnerability-in-the-winbox)
- [MikroTik RouterOS integer underflow](https://junglewise.ai/threats/cve-2026-84411-mikrotik-routeros)
- [MikroTik RouterOS improper input validation in BGP labelled-VPN NLRI](https://junglewise.ai/threats/cve-2026-93345-mikrotik-routeros-before-7-25beta4-contains-an-improper-input)