MikroTik RouterOS through 6.42 allows unauthenticated remote attackers to read arbitrary…
Priority CRITICAL 98Exploited in the wildCWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
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.
Why it matters now
Exploitation Active In CISA KEV since 2021-12-01CISA due date 2022-06-01
EPSS 0.95981 99th percentileScored 2026-11-07
Public exploit Yes 7 exploit referencesTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2021-12-01 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2018-14847
- 2026-10-03 Alias added: GHSA-j583-4cfp-xf9m
References
Exploit 7
- 45578
- https://github.com/BigNerd95/WinboxExploit
- https://github.com/tenable/routeros/blob/master/bug_hunting_in_routeros_derbycon_2018.pdf
- https://github.com/BasuCert/WinboxPoC
- https://github.com/tenable/routeros/tree/master/poc/cve_2018_14847
- https://n0p.me/winbox-bug-dissection/
- https://github.com/tenable/routeros/tree/master/poc/bytheway
More MikroTik Routeros vulnerabilities
- TI-2018-05369 A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS… KEVCVSS 3.1CRITICAL 9.8
- TI-2026-58872 SSH session privilege manipulation via a crafted username in Mikrotik RouterOS KEVCVSS 4.0CRITICAL 9.2
- TI-2026-47574 Kernel memory disclosure and denial of service in MikroTik RouterOS btest service KEVCVSS 4.0HIGH 8.8
- TI-2026-47576 SSH Pre-Authentication Rekey State Bypass in MikroTik RouterOS KEVCVSS 4.0MEDIUM 6.9
- TI-2022-22302 Out-of-bounds read in MicroTik RouterOS CVSS 3.1CRITICAL 9.8
- TI-2017-14215 The Mikrotik RouterOS web server allows memory corruption in releases before Stable… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2018-14847 · CVE Program
- CVE-2018-14847 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-j583-4cfp-xf9m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences