Vulnerability · CVE-2025-6443
Mikrotik RouterOS VXLAN Source IP Improper Access Control Vulnerability.
Published Jun 25, 2025 · catalog updated Jun 26, 2025 · MikroTik RouterOS
Last checked Oct 29, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-6443. EPSS is 0.57%. Act only if a listed version of MikroTik RouterOS is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-67279 · Medium · known exploited
- CVE-2025-10948 · High
- CVE-2025-6563 · Medium
- CVE-2023-30799 · Unknown · known exploited
- CVE-2018-14847 · Critical · known exploited
- Severity
- High7.2
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.57%
- Remediation
- Vendor / distro source
- Affected products
- vendor MikroTik RouterOS 7.15.3, 7.16.2
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 resource
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor MikroTik RouterOS 7.15.3, 7.16.27.15.3, 7.16.2
How to fix CVE-2025-6443
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 7.15.3 · 1 other packages on the advisory
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-6443. EPSS is 0.57%. Act only if a listed version of MikroTik RouterOS is installed.
Which versions are affected?
Compare what you have installed with MikroTik RouterOS 7.15.3, 7.16.2 7.15.3, 7.16.2. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.57%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jun 25, 2025 · EUVD
Detected
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
Jun 26, 2025 · EUVD
Updated
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
Sources
- CVE.orgVulnerability recordCVE-2025-6443
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-6443
30-day exploitation probability 0.57%
first.org - EUVDVulnerability recordEUVD-2025-28736
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
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSOct 23, 2026
- CVE.orgOct 21, 2026
- EUVDOct 20, 2026