CVE-2018-7445
Detail
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.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
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This CVE is in CISA's Known Exploited Vulnerabilities Catalog
Reference
CISA's BOD 22-01 and Known
Exploited Vulnerabilities Catalog for further guidance and requirements.
Vulnerability Name
Date Added
Due Date
Required Action
MikroTik RouterOS Stack-Based Buffer Overflow Vulnerability
09/08/2022
09/29/2022
Apply updates per vendor instructions.
Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
NIST
CISA-ADP
Change History
12 change records found show changes
Modified Analysis by NIST 11/07/2025 2:04:17 PM
Action
Type
Old Value
New Value
Added
Reference Type
CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-7445 Types: US Government Resource
CVE Modified by CISA-ADP 10/21/2025 8:16:25 PM
Action
Type
Old Value
New Value
Added
Reference
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-7445
CVE Modified by CISA-ADP 10/21/2025 4:17:16 PM
Action
Type
Old Value
New Value
Removed
Reference
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-7445
CVE Modified by CISA-ADP 10/21/2025 3:17:33 PM
Action
Type
Old Value
New Value
Added
Reference
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-7445
Reanalysis by NIST 8/15/2025 4:22:11 PM
Action
Type
Old Value
New Value
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:*:*:*:*:*:*
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:*:*:*:*:*:*
Modified Analysis by NIST 4/03/2025 3:54:38 PM
Action
Type
Old Value
New Value
CVE Modified by CISA-ADP 2/07/2025 12:15:11 PM
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 NIST 1/27/2025 1:28:38 PM
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 CVE 11/20/2024 11:12:09 PM
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 MITRE 5/14/2024 1:26:04 AM
Action
Type
Old Value
New Value
Initial Analysis by NIST 4/24/2018 10:53:44 AM
Action
Type
Old Value
New Value
Added
CVSS V3
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added
CVSS V2
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
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:*:*:*:*:*:*
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.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
https://www.exploit-db.com/exploits/44290/ No Types Assigned
https://www.exploit-db.com/exploits/44290/ Exploit, Third Party Advisory, VDB Entry
CVE Modified by MITRE 3/20/2018 9:29:02 PM
Action
Type
Old Value
New Value
Added
Reference
http://www.securityfocus.com/bid/103427 [No Types Assigned]
Added
Reference
https://www.exploit-db.com/exploits/44290/ [No Types Assigned]
Quick Info
CVE Dictionary Entry: CVE-2018-7445 NVD
Published Date: 03/19/2018 NVD
Last Modified: 11/07/2025
Source: MITRE