CVE-2026-86060

No fix known ExploitedEPSS 6%CVSS 9.2

RouterOS contains an argument-handling flaw in the SSH login path involving usernames that begin with a prohibited character, allowing for the trusted RouterOS policy mask to be changed, leading to privilege escalation. Exploitation requires an unauthenticated SSH session to reach the RouterOS login helper.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 2026-09-10 · CVE record · OSV

Products: MikroTik RouterOS