Known Exploited Vulnerability
10.0
HIGH CVSS 2.0
CVE-2018-7445
MikroTik RouterOS Stack-Based Buffer Overflow Vulnerability - [Actively Exploited]
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.

INFO

Published Date :

March 19, 2018, 9:29 p.m.

Last Modified :

Aug. 15, 2025, 8:22 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

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.

Required Action :

Apply updates per vendor instructions.

Notes :

https://www.coresecurity.com/core-labs/advisories/mikrotik-routeros-smb-buffer-overflow#vendor_update, https://mikrotik.com/download; https://nvd.nist.gov/vuln/detail/CVE-2018-7445

Affected Products

The following products are affected by CVE-2018-7445 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mikrotik routeros
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 HIGH [email protected]
CVSS 3.1 CRITICAL [email protected]
CVSS 3.1 CRITICAL 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Follow the instructions below to mitigate the CVE-2018-7445 vulnerability.
Refer to the vendor advisory.
Public PoC/Exploit Available at Github

CVE-2018-7445 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-7445.

URL Resource
http://seclists.org/fulldisclosure/2018/Mar/38 Exploit Mailing List Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/103427 Third Party Advisory VDB Entry
https://www.coresecurity.com/advisories/mikrotik-routeros-smb-buffer-overflow Exploit Third Party Advisory
https://www.exploit-db.com/exploits/44290/ Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2018/Mar/38 Exploit Mailing List Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/103427 Third Party Advisory VDB Entry
https://www.coresecurity.com/advisories/mikrotik-routeros-smb-buffer-overflow Exploit Third Party Advisory
https://www.exploit-db.com/exploits/44290/ Exploit Third Party Advisory VDB Entry
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-7445 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-7445 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
caster0x00/Sara

RouterOS Security Inspector

mikrotik netsec python routeros network-security blueteam defensive cve-scanning forensics hardening

Python

Updated: 2 days ago
248 stars 32 fork 32 watcher
Born at : June 3, 2024, 3:42 a.m. This repo has been linked 5 different CVEs too.
Profile Photo
Ostorlab/KEV

Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.

cisa-kev vulnerability 0day cisa exploits

Updated: 1 week, 2 days ago
581 stars 42 fork 42 watcher
Born at : April 19, 2022, 8:58 a.m. This repo has been linked 1287 different CVEs too.
Profile Photo
BigNerd95/Chimay-Blue

Mikrotik SMB buffer overflow exploit

Python

Updated: 5 months, 1 week ago
64 stars 38 fork 38 watcher
Born at : March 18, 2018, 6:48 p.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-7445 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2018-7445 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Reanalysis by [email protected]

    Aug. 15, 2025

    Action Type Old Value New Value
    Removed CPE Configuration OR *cpe:2.3:o:mikrotik:routeros:6.4.2:rc24:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc23:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc20:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc27:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc18:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc15:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc14:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc12:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc11:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc9:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc6:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc5:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc2:*:*:*:*:*:*
    Changed CPE Configuration OR *cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:* versions up to (excluding) 6.41.3 OR *cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:* versions up to (excluding) 6.41.3 *cpe:2.3:o:mikrotik:routeros:6.42:rc11:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc12:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc14:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc15:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc18:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc2:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc20:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc23:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc24:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc5:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc6:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.42:rc9:*:*:*:*:*:*
  • Modified Analysis by [email protected]

    Apr. 03, 2025

    Action Type Old Value New Value
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Feb. 07, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-119
  • Modified Analysis by [email protected]

    Jan. 27, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://seclists.org/fulldisclosure/2018/Mar/38
    Added Reference http://www.securityfocus.com/bid/103427
    Added Reference https://www.coresecurity.com/advisories/mikrotik-routeros-smb-buffer-overflow
    Added Reference https://www.exploit-db.com/exploits/44290/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Apr. 24, 2018

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://www.coresecurity.com/advisories/mikrotik-routeros-smb-buffer-overflow No Types Assigned https://www.coresecurity.com/advisories/mikrotik-routeros-smb-buffer-overflow Exploit, Third Party Advisory
    Changed Reference Type http://seclists.org/fulldisclosure/2018/Mar/38 No Types Assigned http://seclists.org/fulldisclosure/2018/Mar/38 Exploit, Mailing List, Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securityfocus.com/bid/103427 No Types Assigned http://www.securityfocus.com/bid/103427 Third Party Advisory, VDB Entry
    Changed Reference Type https://www.exploit-db.com/exploits/44290/ No Types Assigned https://www.exploit-db.com/exploits/44290/ Exploit, Third Party Advisory, VDB Entry
    Added CWE CWE-119
    Added CPE Configuration OR *cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:* versions up to (excluding) 6.41.3
    Added CPE Configuration OR *cpe:2.3:o:mikrotik:routeros:6.4.2:rc11:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc12:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc14:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc15:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc18:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc2:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc20:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc23:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc24:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc27:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc5:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc6:*:*:*:*:*:* *cpe:2.3:o:mikrotik:routeros:6.4.2:rc9:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 21, 2018

    Action Type Old Value New Value
    Added Reference https://www.exploit-db.com/exploits/44290/ [No Types Assigned]
    Added Reference http://www.securityfocus.com/bid/103427 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 10
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

87.80 }} 1.76%

score

0.99434

percentile