Security readout for executives and security teams
Plain-English summary
This flaw lets unauthenticated remote attackers read files from MikroTik RouterOS devices through the WinBox interface. Authenticated attackers may also write arbitrary files. Because CISA lists CVE-2018-14847 in KEV, defenders should treat exposed affected devices as actively targeted, not theoretical.
Executive priority
Immediate priority for perimeter and branch routers. This is an older but known-exploited critical management-plane flaw with public exploit material, so unresolved exposure can create direct compromise risk.
Technical view
CVE-2018-14847 is a CWE-22 directory traversal issue in MikroTik RouterOS through 6.42 WinBox. The CVSS 3.1 score is 9.1, with network access, low complexity, no user interaction, and no privileges required for file read. Integrity impact applies where authentication is available for file write.
Likely exposure
Highest exposure is MikroTik RouterOS through 6.42 with WinBox reachable from untrusted networks. The bundle does not provide CPEs or a complete affected-version matrix beyond RouterOS through 6.42.
Exploitation context
CISA KEV inclusion confirms known exploitation. The source bundle also lists public exploit and proof-of-concept references, increasing operational risk for internet-exposed management interfaces.
Researcher notes
Evidence is strong for vulnerability class, affected line, severity, public exploit availability, and known exploitation. The provided bundle does not include detailed vendor fixed-version text, so remediation should be anchored to MikroTik guidance.
Mitigation direction
- Review MikroTik WinBox vulnerability guidance and apply vendor-recommended RouterOS updates.
- Restrict WinBox management access to trusted administrative networks only.
- Prioritize externally reachable RouterOS devices through 6.42 for remediation.
- Disable unnecessary remote management exposure until vendor guidance is applied.
- Investigate affected devices for unauthorized configuration or file access.
Validation and detection
- Inventory MikroTik RouterOS devices and record exact RouterOS versions.
- Identify any RouterOS through 6.42 systems with WinBox enabled.
- Verify whether WinBox is reachable from the internet or untrusted networks.
- Confirm vendor guidance has been applied on each affected device.
- Review device configuration and logs for suspicious administrative changes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-14847 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.1 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N3.95.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 45578CVE reference · exploit
- https://github.com/BigNerd95/WinboxExploitCVE reference
- https://github.com/tenable/routeros/blob/master/bug_hunting_in_routeros_derbycon_2018.pdfCVE reference
- https://github.com/BasuCert/WinboxPoCCVE reference
- https://github.com/tenable/routeros/tree/master/poc/cve_2018_14847CVE reference
- https://n0p.me/winbox-bug-dissection/CVE reference
- https://github.com/tenable/routeros/tree/master/poc/bythewayCVE reference
- https://mikrotik.com/supportsec/winbox-vulnerabilityCVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-14847CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.