CVE-2018-14847

Name: CVE-2018-14847
Creator: NVD / NIST
Published: 2018-08-02T07:29:00.28+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10Actively ExploitedEPSS 96.09%

Last modified Jun 17, 2026

CVE-2018-14847 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 96.09% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

96.09%

99.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 1, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mikrotik	Routeros	<= 6.42

References

https://github.com/BasuCert/WinboxPoCExploit, Mitigation, Third Party Advisory
https://github.com/BigNerd95/WinboxExploitExploit, Mitigation, Third Party Advisory
https://github.com/tenable/routeros/blob/master/bug_hunting_in_routeros_derbycon_2018.pdfBroken Link, Exploit, Third Party Advisory
https://github.com/tenable/routeros/tree/master/poc/bythewayExploit, Third Party Advisory
https://github.com/tenable/routeros/tree/master/poc/cve_2018_14847Exploit, Third Party Advisory
https://mikrotik.com/supportsec/winbox-vulnerabilityVendor Advisory
https://n0p.me/winbox-bug-dissection/Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/45578/Exploit, Third Party Advisory, VDB Entry
https://github.com/BasuCert/WinboxPoCExploit, Mitigation, Third Party Advisory
https://github.com/BigNerd95/WinboxExploitExploit, Mitigation, Third Party Advisory
https://github.com/tenable/routeros/blob/master/bug_hunting_in_routeros_derbycon_2018.pdfBroken Link, Exploit, Third Party Advisory
https://github.com/tenable/routeros/tree/master/poc/bythewayExploit, Third Party Advisory
https://github.com/tenable/routeros/tree/master/poc/cve_2018_14847Exploit, Third Party Advisory
https://n0p.me/winbox-bug-dissection/Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/45578/Exploit, Third Party Advisory, VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-14847US Government Resource

Timeline

Published: Aug 2, 2018
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-14847?

How severe is CVE-2018-14847?

CVE-2018-14847 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 96.09% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2018-14847?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-14847?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST