CVE-2018-7445

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.658 · 99 %ileexploit · PoCEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 1 exploit · PoC

Likely / severe?

65.8% (99th) EPSS

CVSS 10 · high

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2022-09-08remediate by 2022-09-29

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

MikroTik RouterOS Stack-Based Buffer Overflow Vulnerability

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.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9.8–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-119US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-44290MikroTik RouterOS < 6.41.3/6.42rc27 - SMB Buffer OverflowPoC · exploit_db

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
MikroTik RouterOS≤ 6.42rc27fstec_bduRU
MikroTik RouterOS≤ 6.41.3fstec_bduRU
mikrotik routeros< 6.41.3nvdUScpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:*
mikrotik routeros= 6.42nvdUScpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2018-03-19modified 2026-06-17

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+21023 more

references (11)

External citations — patches, advisories, analysis.

https://cxsecurity.com/issue/WLB-2018030146 cnnvd
https://mikrotik.com/Patchcnnvd
http://seclists.org/fulldisclosure/2018/Mar/38 enisa_euvd
http://www.securityfocus.com/bid/103427 enisa_euvd
https://www.coresecurity.com/advisories/mikrotik-routeros-smb-buffer-overflow enisa_euvd
https://www.exploit-db.com/exploits/44290/enisa_euvd
http://seclists.org/fulldisclosure/2018/Mar/38ExploitMailing ListThird Party AdvisoryVDB Entrynvd
http://www.securityfocus.com/bid/103427Third Party AdvisoryVDB Entrynvd

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