CVE-2026-67279

Fixed in a distro release ExploitedEPSS 2%CVSS 6.9

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)

Published 2026-09-05 · In CISA KEV since 2026-09-25 · CVE record · OSV

Products: MikroTik RouterOS

Distro releases