CVE-2025-42611
MEDIUM EPSS 8.4%
Published May 5, 20261mo ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Published May 5, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
8.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-295
References 1
- cert.si https://www.cert.si/en/cve-2025-42611/
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.