CVE-2018-7445

mikrotik routeros

Published 19 Mar 2018 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 8 Sept 2022, with a remediation deadline of 29 Sept 2022 for US federal agencies.

Required action: Apply updates per vendor instructions.

Description

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 RouterOS before versions 6.41.3/6.42rc27 are vulnerable.

References

seclists.org/fulldisclosure/2018/Mar/38 · Exploit, Mailing List, Third Party Advisory
www.securityfocus.com/bid/103427 · Third Party Advisory, VDB Entry
www.coresecurity.com/advisories/mikrotik-routeros-smb-buffer-overflow · Exploit, Third Party Advisory
www.exploit-db.com/exploits/44290/ · Exploit, Third Party Advisory, VDB Entry
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-7445 · US Government Resource