CVE-2018-7445
MikroTik RouterOS Stack-Based Buffer Overflow Vulnerability
- Critical 9.8
- Exploited: added to CISA KEV 8 Sep 2022
- A public exploit reference is listed
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.
Key facts
- Published
- 19 Mar 2018
- Last changed
- 21 Oct 2025
- Assigned by
- mitre
- KEV added
- 8 Sep 2022
- KEV fix due
- 29 Sep 2022
- EPSS
- 65.828% likely to be exploited in the next 30 days, higher than 99.281% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 19 Mar 2018 Published
- 8 Sep 2022 CVE-2018-7445 added to CISA KEV
- 8 Sep 2022 Added to the CISA KEV catalogue