CVE-2025-6443

Mikrotik RouterOS VXLAN Source IP Improper Access Control Vulnerability

At a glance

Severity
HIGH 7.2
EPSS
EPSS 0.57 % · percentile 47 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
zdi
NVD status
Analyzed

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.

Scores

VersionScoreVectorScored by
CVSS 3.0HIGH 7.2CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:Nzdi
CVSS 3.0HIGH 7.2CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:NNVD · zdi-disclosures@trendmicro.com (Secondary)

Weaknesses (CWE)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
Mikrotik · RouterOSaffected 7.15.3, 7.16.2

References

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD