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 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.

CVSS v3 7.2 HIGH

7.2^/10

CVSS v3 : HIGH

Vector : AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Exploitability : 3.9 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-25-424/

Configurations

No configuration.

History

26 Jun 2025, 18:57

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-06-25 22:15

Updated : 2025-06-26 18:57

NVD link : CVE-2025-6443

Mitre link : CVE-2025-6443

CVE.ORG link : CVE-2025-6443

JSON object : View

Products Affected

No product.

CWE

CWE-284

Improper Access Control

{"id": "CVE-2025-6443", "cveTags": [], "metrics": {"cvssMetricV30": [{"type": "Secondary", "source": "zdi-disclosures@trendmicro.com", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 7.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 3.9}]}, "published": "2025-06-25T22:15:20.960", "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-424/", "source": "zdi-disclosures@trendmicro.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "zdi-disclosures@trendmicro.com", "description": [{"lang": "en", "value": "CWE-284"}]}], "descriptions": [{"lang": "en", "value": "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.\n\nThe 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."}, {"lang": "es", "value": "Vulnerabilidad de control de acceso incorrecto a la IP de origen de VXLAN en Mikrotik RouterOS. Esta vulnerabilidad permite a atacantes remotos eludir las restricciones de acceso en las instalaciones afectadas de Mikrotik RouterOS. No se requiere autenticaci\u00f3n para explotar esta vulnerabilidad. La falla espec\u00edfica se encuentra en el manejo de direcciones IP remotas al procesar el tr\u00e1fico VXLAN. El problema se debe a la falta de validaci\u00f3n de la direcci\u00f3n IP remota con los valores configurados antes de permitir el acceso a la red interna. Un atacante puede aprovechar esta vulnerabilidad para acceder a los recursos de la red interna. Anteriormente, se denomin\u00f3 ZDI-CAN-26415."}], "lastModified": "2025-06-26T18:57:43.670", "sourceIdentifier": "zdi-disclosures@trendmicro.com"}