CVE DATABASE / CVE-2018-14847
CVE-2018-14847
MikroTik Router OS Directory Traversal Vulnerability
CVSS 9.1 · CRITICAL
⚠ CISA KEV — ACTIVELY EXPLOITED
On the CISA KEV catalog
Confirmed exploited in the wild. Added 2021-12-01.
Federal remediation due 2022-06-01.
Required action: Apply updates per vendor instructions.
Summary
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
| Base score | 9.1 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | NONE |
Weakness type (CWE)
Affected products
Mikrotik routeros
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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/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-14847
Data: NIST NVD + CISA KEV. NVD last modified 2025-11-07. Always verify against the vendor advisory before acting.