Quick answers
- Is CVE-2026-84411 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-84411 being exploited in the wild.
- How severe is CVE-2026-84411?
- Critical severity, with a CVSS score of 9.8, published 2 October 2026.
- Which products and versions are affected?
- MikroTik RouterOS before 7.24.
- Is there a fix for CVE-2026-84411?
- A patch was published on 2026: Fix available in RouterOS 7.24 and later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-84411 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-84411?
- Check whether you run MikroTik RouterOS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An integer underflow (wrap-around) vulnerability exists in MikroTik RouterOS that can be exploited remotely to achieve code execution or denial of service. The vulnerability affects RouterOS versions prior to 7.24. Remediation is available by upgrading to RouterOS 7.24 or later.
Affected products
- MikroTik RouterOS before 7.24
Timeline
- 2026-09-29: disclosed
- 2026: patched: Fix available in RouterOS 7.24 and later