CVE-2026-14227: MikroTik RouterOS

Medium severity, CVSS 4.9. EPSS: 0.4% chance of exploitation in the next 30 days.

An API session‑management flaw in products with the MikroTik RouterOS API enabled are vulnerable to a Insufficient Session Expiration vulnerability. This could allow active sessions to retain their previous permission set after inactivity timeouts or user‑group changes. As a result, an authenticated user whose permissions have been reduced may continue accessing information.

Affected products

• MikroTik RouterOS: any version

Published 2026-07-30. Last modified 2026-09-08.