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.
Metrics
Affected Vendors & Products
References
History
Wed, 29 Jul 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mikrotik
Mikrotik cloud Hosted Router Mikrotik routeros |
|
| Vendors & Products |
Mikrotik
Mikrotik cloud Hosted Router Mikrotik routeros |
Wed, 29 Jul 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 28 Jul 2026 20:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Improper restriction of excessive authentication attempts in MikroTik RouterOS and Cloud Hosted Router | |
| Weaknesses | CWE-307 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: icscert
Published:
Updated: 2026-07-29T13:57:56.713Z
Reserved: 2026-07-20T20:41:22.596Z
Link: CVE-2026-16347
Updated: 2026-07-29T13:57:41.343Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-07-29T15:10:41Z