CVE-2025-42611 — Improper certificate validation in multiple RouterOS services
RouterOS provides various services that rely on correct verification of client and server certificates to secure confidentiality and integrity of communications. This includes O…
Published: 2026-05-05 · CVSS: 6.5 · CVSS 3.1
RouterOS provides various services that rely on correct verification of client and server certificates to secure confidentiality and integrity of communications. This includes OpenVPN, CAPsMAN, Dot1x (802.1X), among others. The vulnerability lies in shared certificate validation logic which uses the system certificate store that is shared and equally trusted by all system services. This causes confusion of scope, allowing any certificate authority present in the system-wide trust store to be trusted in any context (with some exceptions), allowing partial or full authentication bypass in CAPsMAN, OpenVPN, Dot1X and potentially others.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7