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CISA advisoryVulnerabilitiesPublished September 29, 2026

MikroTik RouterOS

Updated under an hour ago ()

View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to achieve remote code execution or cause a denial of service. The following versions of MikroTik RouterOS are affected: RouterOS <7.24 (CVE-2026-84411) CVSS Vendor Equipment Vulnerabilities v3 9.8 MikroTik MikroTik RouterOS Integer Underflow (Wrap or Wraparound) Background Critical Infrastructure Sectors: Communications, Information Technology Countries/Areas Deployed: Worldwide Company Headquarters Location: Latvia Vulnerabilities Expand All + CVE-2026-84411 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. View CVE Details Affected Products MikroTik RouterOS Vendor: MikroTik Product Version: MikroTik RouterOS: <7.24 Product Status: known_affected Remediations Vendor fix MikroTik recommends users update RouterOS to version 7.24 or later. The upgrade can be downloaded from the MikroTik website. https://mikrotik.com/…

Tags
CISA, ICS
Related exam domains
CISSP 4: Communication and Network Security; CISSP 8: Software Development Security; CISM 2: Information Security Risk Management; CISA 5: Protection of Information Assets
Source record id
/node/25563
First seen by InfoSec Signals
10/9/2026

Source: CISA cybersecurity advisories, Cybersecurity and Infrastructure Security Agency about this source more from it

Exam domain labels come from a keyword heuristic and are study hints, not an official mapping. The summary is the publisher's own text, shortened; the linked record is authoritative.

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