CERT Polska has documented the MikroTrick chain: two RouterOS SSH flaws, CVE-2026-67279 and CVE-2026-86060, combine to hand attackers full administrative control of an exposed router with no password and no SSH key. CISA added CVE-2026-67279 to its KEV catalog on September 25, 2026: patch to 6.49.21, 7.23.4 or 7.24.2 and hunt for signs of compromise.

CERT Polska warns that attackers are taking full administrative control of MikroTik routers whose SSH service is reachable from the internet, without authentication. Update RouterOS and audit the configuration before putting any device back into service.

OpenSSH 10.4 shipped in July 2026, multiplexing saves 5 seconds per connection, and SSH certificates have been replacing authorized_keys since 2010 without anyone noticing. If you're still typing passwords to reach your servers, this article is for you.