Is CVE-2025-6443 actively exploited?

No active exploitation of CVE-2025-6443 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-6443 be exploited remotely?

Yes. CVE-2025-6443 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-6443?

CVE-2025-6443 has a CVSS score of 7.2 (HIGH).

HOME VULNERABILITIESCVE-2025-6443

HIGH

CVE-2025-6443

CWE-284Published: June 25, 2025· Updated: Jun 17, 2026

7.2

CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2025-6443 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.