CVE-2018-14847

MikroTik Router OS Directory Traversal Vulnerability

Critical 9.1
Exploited: added to CISA KEV 1 Dec 2021
A public exploit reference is listed

Description

MikroTik RouterOS through 6.42 allows unauthenticated remote attackers to read arbitrary files and remote authenticated attackers to write arbitrary files due to a directory traversal vulnerability in the WinBox interface.

Key facts

Published: 2 Aug 2018
Last changed: 21 Oct 2025
Assigned by: mitre
KEV added: 1 Dec 2021
KEV fix due: 1 Jun 2022
EPSS: 95.981% likely to be exploited in the next 30 days, higher than 99.877% of CVEs (scores for 15 Nov 2026)
SSVC (CISA): Exploitation: active; Automatable: yes; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

9.1CVSS 3.1, Criticalfrom CISA (ADP container)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

What to do

Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Vendor	Product	Versions
n/a	n/a	n/a (affected)

Timeline

2 Aug 2018 Published
1 Dec 2021 CVE-2018-14847 added to CISA KEV
1 Dec 2021 Added to the CISA KEV catalogue

Weakness

CWE-22

Practice this bug class

HackZoneLabs has a hands-on lab on Path traversal (CWE-22).

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