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CVE PROGRAM SOURCE RECORD9.3 Critical

CVE-2026-84411

MikroTik RouterOS Integer Underflow

Description

The web management service in affected RouterOS versions contains an integer underflow in its HTTP request body handling that is reachable before authentication. This can be leveraged by an unauthenticated network attacker to achieve arbitrary code execution as root, or to cause a denial of service, using a single crafted request.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

MikroTik RouterOS

Default version status: unaffected

  • 0 to < 7.24affected
  • 7.24unaffected

References