CVE-2025-6443 json
Mikrotik RouterOS VXLAN Source IP Improper Access Control Vulnerability
published 2025-06-25 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-28736
- cvss
- 7.2
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 47%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- mikrotik routeros 7.20
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 16 mo ago
Exploit prediction
0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.2 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- Mikrotik RouterOS
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
zerodayinitiative.com
/advisories/ZDI-25-424/
third-party-advisory
Sources
- CVE List CVE-2025-6443
- NVD CVE-2025-6443
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