CVE-2026-84411 — MikroTik RouterOS Integer Underflow
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 lev…
Published: 2026-10-02 · CVSS: 9.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7