8.8
High
CVE-2026-16347 MikroTik RouterOS contains a weakness in its API authentication handling that lacks effective safeguards against…
Description
MikroTik RouterOS contains a weakness in its API authentication handling that lacks effective safeguards against excessive login attempts. The system does not enforce meaningful rate-limiting, account lockout, or source-based restrictions, allowing repeated authentication failures to proceed without defensive response. In some versions, a fixed per-connection delay is present, but it can be bypassed through concurrent sessions, resulting in continued high-volume attempts. This deficiency increases the risk that an attacker could eventually obtain valid credentials and gain unauthorized access to administrative services.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| RouterOS | Versions not published | |
| Cloud Hosted Router | Versions not published |
Other CVEs of RouterOS
The 26 CVEs of RouterOS →
CVE-2026-89035
MikroTik RouterOS through 7.24.5 contains a session token replay vulnerability in the WebFig interface that allows…
9.1
Critical
CVE-2026-112158
A weakness has been identified in MikroTik RouterOS up to 6.40.5/6.44/7.20.8
7.1
High
CVE-2026-103903
An incorrect authorization vulnerability in the WinBox authentication flow of MikroTik RouterOS allows a remote…
8.7
High
CVE-2026-84411
The web management service in affected RouterOS versions contains an integer underflow in its HTTP request body handling…
9.8
Critical