Read the docs
TI-2017-12814 Aliases CVE-2017-17537GHSA-326c-f2r3-76jm

MikroTik RouterBOARD v6.39.2 and v6.40.5 allows an unauthenticated remote attacker to…

Priority LOW 36CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

MikroTik RouterBOARD v6.39.2 and v6.40.5 allows an unauthenticated remote attacker to cause a denial of service by connecting to TCP port 53 and sending data that begins with many '\0' characters, possibly related to DNS.

Why it matters now

EPSS 0.0175 77th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:mikrotik:routerboard:6.39.2:*:*:*:*:*:*:*6.39.2VulnerableMikroTik
cpe:2.3:o:mikrotik:routerboard:6.40.5:*:*:*:*:*:*:*6.40.5VulnerableMikroTik
cpe:2.3:h:mikrotik:routerboard:-:*:*:*:*:*:*:*not specified by NVDRunning onMikroTik
  • cpe:2.3:o:mikrotik:routerboard:6.39.2:*:*:*:*:*:*:* Versions 6.39.2 Vulnerable ·MikroTik
  • cpe:2.3:o:mikrotik:routerboard:6.40.5:*:*:*:*:*:*:* Versions 6.40.5 Vulnerable ·MikroTik
  • cpe:2.3:h:mikrotik:routerboard:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·MikroTik

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-17537
  2. 2026-10-03 Alias added: GHSA-326c-f2r3-76jm

References

Exploit 1

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences