UNKNOWN CISA KEV

CVE-2026-67279

CVSS v3

—

Unknown

EPSS Score

0.4 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

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-

CISA Known Exploited Vulnerability

Date Added: 2026-09-25
Patch Due Date: 2026-09-28
Ransomware Use: Unknown

Technical details

Published: 2026-09-05
Last Modified: 2026-09-05

Frequently asked questions

What is CVE-2026-67279?

Is CVE-2026-67279 actively exploited?

Yes. CVE-2026-67279 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-09-28.

What is the CVSS score for CVE-2026-67279?

A CVSS score has not been assigned to CVE-2026-67279 yet.

Is CVE-2026-67279 affecting your environment?

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