MikroTik RouterOS Stack-Based Buffer Overflow Vulnerability

Are you affected?

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• cpe mikrotik/routerosversion unspecified
• cpe mikrotik/routeros6.42
• vendor MikroTik RouterOSversion unspecified

How to fix CVE-2018-7445

• Recommended remediation

  Apply updates per vendor instructions. CISA due date Sep 29, 2022.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

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.

1. Mar 19, 2018 · Catalog

   Detected

   A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system. The overflow occurs before authentication takes place, so it is possible for an unauthenticated remote attacker to exploit it. All architectures and all devices running Ro

2. Sep 8, 2022 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Sep 29, 2022 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system. The overflow occurs before authentication takes place, so it is possible for an unauthenticated remote attacker to exploit it. All architectures and all devices running Ro

Sources

• CISA KEVConfirmed exploitationCVE-2018-7445

  In MikroTik RouterOS, a stack-based buffer overflow occurs when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system.

  cisa.gov
• CVE.orgVulnerability recordCVE-2018-7445

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2018-7445

  30-day exploitation probability 60.8%

  first.org
• Exploit DatabasePublic exploit reference44290

  Public archive entry. The exploit body is not stored here.

  exploit-db.com
• NIST NVDVulnerability recordCVE-2018-7445

  A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system. The overflow occurs before authentication takes pla

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2018-7445

  In MikroTik RouterOS, a stack-based buffer overflow occurs when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system.

  vulncheck.com

References

• Exploit · seclists.org
• Third Party Advisory · securityfocus.com
• CISA note · mikrotik.com
• CISA note · nvd.nist.gov
• VulnCheck exploitation evidence · cisa.gov
• Exploit · coresecurity.com
• CISA note · coresecurity.com
• Exploit · exploit-db.com
• VulnCheck exploitation evidence · researchgate.net

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.