CVE-2018-14847
Published 2018-08-02 · Updated 2026-06-17 · Source cve@mitre.org
Summary
CVE-2018-14847 is a critical-severity (CVSS 9.1) vulnerability in MikroTik RouterOS. CISA added it to the Known Exploited Vulnerabilities catalog on December 1, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 1, 2022. CISA does not currently list it as used in ransomware campaigns. MikroTik has 5 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.
All 5 known-exploited MikroTik vulnerabilities →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 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA Known-Exploited Vulnerability
Product: MikroTik — RouterOS
Name: MikroTik Router OS Directory Traversal Vulnerability
Date added: 2021-12-01 · Due: 2022-06-01
Required action: Apply updates per vendor instructions.
References
- https://github.com/BasuCert/WinboxPoC
- https://github.com/BigNerd95/WinboxExploit
- https://github.com/tenable/routeros/blob/master/bug_hunting_in_routeros_derbycon_2018.pdf
- https://github.com/tenable/routeros/tree/master/poc/bytheway
- https://github.com/tenable/routeros/tree/master/poc/cve_2018_14847
- https://mikrotik.com/supportsec/winbox-vulnerability
- https://n0p.me/winbox-bug-dissection/
- https://www.exploit-db.com/exploits/45578/