MikroTik RouterOS up to 6.41.2/6.42rc26 SMB memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical has been found in MikroTik RouterOS up to 6.41.2/6.42rc26 (Router Operating System). This affects an unknown functionality of the component SMB. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 03/15/2018. The weakness was shared 03/15/2018 with Core Security as [CORE-2018-0003] MikroTik RouterOS SMB Buffer Overflow as confirmed mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. The vendor cooperated in the coordination of the public release. This vulnerability is uniquely identified as CVE-2018-7445 since 02/23/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. The exploit is shared for download at seclists.org. The vulnerability scanner Nessus provides a plugin with the ID 108521 (MikroTik RouterOS < 6.40.7 or 6.41.x < 6.41.3 SMB Buffer Overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context remote. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13147 (MikroTik RouterOS Stack-based Buffer Overflow Vulnerability).

Upgrading to version 6.41.3 or 6.42rc27 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 46076.

The vulnerability is also documented in the databases at Tenable (108521) and Exploit-DB (44290).





CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.2

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍



VulDB Base Score: 🔍
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Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 108521
Nessus Name: MikroTik RouterOS < 6.40.7 or 6.41.x < 6.41.3 SMB Buffer Overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Saint ID: microtik_routeros_smb_bo
Saint Name: MicroTik RouterOS SMB buffer overflow

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: RouterOS 6.41.3/6.42rc27

Snort ID: 46076
Snort Message: NETBIOS MikroTik RouterOS buffer overflow attempt
Snort Class: 🔍


02/23/2018 🔍
03/15/2018 +20 days 🔍
03/15/2018 +0 days 🔍
03/15/2018 +0 days 🔍
03/15/2018 +0 days 🔍
03/15/2018 +0 days 🔍
03/19/2018 +4 days 🔍
03/19/2018 +0 days 🔍
03/22/2018 +3 days 🔍
02/05/2021 +1051 days 🔍


Advisory: [CORE-2018-0003] MikroTik RouterOS SMB Buffer Overflow
Organization: Core Security
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2018-7445 (🔍)
SecurityFocus: 103427 - MikroTik RouterOS CVE-2018-7445 Buffer Overflow Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013


Created: 03/19/2018 08:03 AM
Updated: 02/05/2021 01:12 PM
Changes: (2) vulnerability_cvss2_nvd_basescore source_cve_nvd_summary
Complete: 🔍


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