CVE-2020-20214: Mikrotik RouterOs 6.44.6 (long-term tree) suffers from an assertion failure vulnerability in the btest proc...

Security readout for executives and security teams

CVE-2020-20214 is a denial-of-service issue in MikroTik RouterOS tied to the btest process. The CVE says an authenticated remote attacker can send a crafted packet that triggers an assertion failure, potentially disrupting router service. Public evidence does not provide a CVSS score, confirmed fix version, or active exploitation claim. Exposure is most relevant to organizations running MikroTik RouterOS, especially 6.44.6 long-term where authenticated remote access to btest or router management is possible. The source data does not identify CPEs, broad version ranges, or internet-exposed default configurations. Treat this as a targeted availability risk for MikroTik-managed networks. Prioritize exposed or remotely administered routers, but avoid emergency assumptions because public evidence lacks CVSS, KEV listing, exploit-in-the-wild confirmation, and definitive remediation details. Mitigation focus: Check MikroTik guidance for fixed or recommended RouterOS versions.; Restrict router management and btest access to trusted administrative networks.; Disable unnecessary test or diagnostic services where operationally safe..

Prepared

Jun 2, 2026, 19:53 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.