MikroTik – Urgent safety notice (CVE-2019-11477, CVE-2019-11478, CVE-2019-11479)

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Netflix has identified several TCP networking vulnerabilities in the Linux kernel that is used in RouterOS. The vulnerabilities can trigger denial of service if the RouterOS system is attacked from an insufficiently protected network interface (port). Firewall can protect against the issue.

MikroTik has already applied the necessary patches, and released RouterOS versions containing them.

Update: fix included in RouterOS 6.45.1, which is available on MikroTik webpage.

Course of action
Make sure your device is not accessible from untrusted networks, protect it using our suggestions and when upgrade files become available, upgrade to latest RouterOS release.

More details

Here you will find the original article.

Here you will find the original MikroTik blog post:


If you have questions or need assistance with the implementation of important updates do not hesitate to contact us.

We are happy to call you back for further questions about the MikroTik firmware update.

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