# CVE-2017-12150

## Summary

- **CVE ID:** CVE-2017-12150
- **Severity:** HIGH
- **CVSS Score:** 7.4 (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
- **CWE:** CWE-300
- **Published:** Jul 26, 2018
- **Last Modified:** Mar 14, 2026

## Description

It was found that samba before 4.4.16, 4.5.x before 4.5.14, and 4.6.x before 4.6.8 did not enforce "SMB signing" when certain configuration options were enabled. A remote attacker could launch a man-in-the-middle attack and retrieve information in plain-text.

## Affected Products

- Samba — samba (4.6.8)
- Samba — samba (4.5.14)
- Samba — samba (4.4.16)
- Samba — samba (4.7.0)

## References

- [CNA](https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbns03775en_us)
- [CNA](https://security.netapp.com/advisory/ntap-20170921-0001/)
- [CNA](https://access.redhat.com/errata/RHSA-2017:2790)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-12150)
- [CNA](http://www.securityfocus.com/bid/100918)
- [CNA](https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03817en_us)
- [CNA](https://www.samba.org/samba/security/CVE-2017-12150.html)
- [CNA](https://www.debian.org/security/2017/dsa-3983)
- [CNA](https://access.redhat.com/errata/RHSA-2017:2858)
- [CNA](http://www.securitytracker.com/id/1039401)
- [CNA](https://access.redhat.com/errata/RHSA-2017:2789)
- [CNA](https://access.redhat.com/errata/RHSA-2017:2791)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 18.68%
- **EPSS Percentile:** 95.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._