Vulnerability · Published Jul 30, 2026 · Assigned by icscert

CVE-2026-14227Insufficient session expiration in MikroTik RouterOS

Medium 4.9

In plain English

A medium-severity security flaw in RouterOS from MikroTik. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).

Severity (CVSS 3.1)4.9Medium

Exploit odds (30 days)0.4%top 68.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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 (as reported)

Vendor	Product	Versions
MikroTik	RouterOS	All versions

Weakness: CWE-613 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-01 government-resource