CVE-2025-6443: Mikrotik RouterOS VXLAN Source IP Improper Access Control Vulnerability
Mikrotik RouterOS VXLAN Source IP Improper Access Control Vulnerability. This vulnerability allows remote attackers to bypass access restrictions on affected installations of Mikrotik RouterOS. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of remote IP addresses when processing VXLAN traffic. The issue results from the lack of validation of the remote IP address against configured values prior to allowing ingress traffic into the internal network. An attacker can leverage this vulnerability to gain access to internal network resources. Was ZDI-CAN-26415.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-6443?
CVE-2025-6443 is a high-severity vulnerability that allows remote attackers to bypass access controls on Mikrotik RouterOS.
How do I fix CVE-2025-6443?
To fix CVE-2025-6443, update your Mikrotik RouterOS to the latest version provided by Mikrotik.
Who is affected by CVE-2025-6443?
Any user with Mikrotik RouterOS installed on their devices is potentially affected by CVE-2025-6443.
What type of vulnerability is CVE-2025-6443?
CVE-2025-6443 is classified as an improper access control vulnerability.
Is authentication required to exploit CVE-2025-6443?
No, authentication is not required to exploit CVE-2025-6443.