CVE-2018-14847

MikroTik Router OS Directory Traversal

9.1 CRITICALActively exploited (CISA KEV)Public exploitEPSS 96.1%

Published2 Aug 2018
Added to CISA KEV1 Dec 2021
Remediation due1 Jun 2022

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

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

Affected products

Mikrotik Routeros≤ 6.42

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

https://mikrotik.com/supportsec/winbox-vulnerability

References

https://github.com/BasuCert/WinboxPoCExploitMitigationThird Party Advisory
https://github.com/BigNerd95/WinboxExploitExploitMitigationThird Party Advisory
https://github.com/tenable/routeros/blob/master/bug_hunting_in_routeros_derbycon_2018.pdfBroken LinkExploitThird Party Advisory
https://github.com/tenable/routeros/tree/master/poc/bythewayExploitThird Party Advisory
https://github.com/tenable/routeros/tree/master/poc/cve_2018_14847ExploitThird Party Advisory
https://mikrotik.com/supportsec/winbox-vulnerabilityVendor Advisory
https://n0p.me/winbox-bug-dissection/ExploitThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-14847US Government Resource
https://www.exploit-db.com/exploits/45578/ExploitThird Party AdvisoryVDB Entry

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2018-14847 being actively exploited?

Yes. CVE-2018-14847 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 1 Dec 2021.

How severe is CVE-2018-14847?

CVE-2018-14847 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 96.1% probability of exploitation.

Which products are affected by CVE-2018-14847?

Affected products include Mikrotik Routeros.

How do I fix CVE-2018-14847?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2018-14847 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.