What is CVE-2025-6443?

CVE-2025-6443 is a high-severity vulnerability in Mikrotik Routeros, classified under Improper Access Control. CVSS score: 7.2/10. Published 2025-06-25.

How severe is CVE-2025-6443?

High severity. CVSS v3 base score is 7.2 out of 10.

Is CVE-2025-6443 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Mikrotik Routeros

CVE-2025-6443

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 thi…

EPSS: 0.007 (73.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Mikrotik Routeros — versions 7.15.3, 7.16.2

Weakness classification (CWE)

CWE-284 — Improper Access Control

Public proof-of-concept exploits

References

ZDI-25-424 (x_research-advisory)

Frequently asked questions

What is CVE-2025-6443?: CVE-2025-6443 is a high-severity vulnerability in Mikrotik Routeros, classified under Improper Access Control. CVSS score: 7.2/10. Published 2025-06-25.
How severe is CVE-2025-6443?: High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2025-6443 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.