Vulnerability
CVE-2026-67279
Descriptive record received from OpenCTI and minimised for consultation in the Intel portal.
- Sharing
- TLP:CLEAR
- Confidence
- 100
- Source
- The CVE Program
- Updated
- 26/09/2026 05:31
Description
RouterOS SSH enters the connection protocol after a client-requested rekey even though user authentication was never attempted, allowing an unauthenticated client to open a session channel and send an exec request. On affected builds the server dispatches the command, enabling unauthenticated creation, overwrite, and reconstruction of files in the RouterOS managed file namespace, including support files containing configuration and diagnostic data.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)
Aliases and classifications
CWE-841Improper Enforcement of Behavioral Workflow
Minimised technical details
No raw data- cisa kev
- True
Provenance
Public references
- release-notes
https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801 - vendor-advisory
https://mikrotik.com/supportsec/september-2026-vulnerability/ - third-party-advisory
https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve - technical-description
https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/ - release-notes
https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800 - exploit
https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/ - release-notes
https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802
EudorIA correlation
Intel catalogue
The vulnerability is also available in the EudorIA editorial catalogue.
Open EudorIA analysisPresence in OpenCTI describes an intelligence correlation and does not, by itself, constitute evidence of compromise, legal attribution or operational guidance applicable without context verification.