Vulnerability Monitor

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CVE-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 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.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from mikrotik organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-03-19T21:29:01.083

Last Modified

2025-11-07T19:04:17.633

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

10.0

Weaknesses

Type: Primary
CWE-119
Type: Secondary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	mikrotik	routeros	< 6.41.3	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes
Operating System	mikrotik	routeros	6.42	Yes

References

http://seclists.org/fulldisclosure/2018/Mar/38 Exploit, Mailing List, Third Party Advisory, VDB Entry ([email protected])
http://www.securityfocus.com/bid/103427 Third Party Advisory, VDB Entry ([email protected])
https://www.coresecurity.com/advisories/mikrotik-routeros-smb-buffer-overflow Exploit, Third Party Advisory ([email protected])
https://www.exploit-db.com/exploits/44290/ Exploit, Third Party Advisory, VDB Entry ([email protected])
http://seclists.org/fulldisclosure/2018/Mar/38 Exploit, Mailing List, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/103427 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://www.coresecurity.com/advisories/mikrotik-routeros-smb-buffer-overflow Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.exploit-db.com/exploits/44290/ Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-7445 US Government Resource (134c704f-9b21-4f2e-91b3-4a467353bcc0)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For mikrotik's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.