MikroTik RouterOS
Summary
MikroTik RouterOS versions prior to 7.24 are affected by a critical vulnerability (CVE-2026-84411) due to an integer underflow in its web management service. This flaw can be exploited by unauthenticated attackers to achieve remote code execution or cause a denial of service through a crafted HTTP request.
IFF Assessment
The article details a critical vulnerability that allows unauthenticated remote code execution and denial of service, posing a significant threat to defenders.
Severity
The CVSS score of 9.8 indicates a critical vulnerability, reflecting an attack vector that is network-based (AV:N), has low complexity (AC:L), requires no privileges (PR:N) and no user interaction (UI:N), leading to high impact on confidentiality, integrity, and availability (C:H/I:H/A:H).
Defender Context
Defenders should prioritize patching or updating MikroTik RouterOS devices to version 7.23 or later to mitigate the risk of remote code execution and denial of service attacks. Network segmentation and robust perimeter security can help limit the attack surface for unauthenticated exploits targeting web management interfaces.