What is CVE-2017-12150?

CVE-2017-12150 is a high-severity vulnerability in Samba, classified under Channel Accessible by Non-Endpoint. CVSS score: 7.4/10. Published 2018-07-26.

How severe is CVE-2017-12150?

High severity. CVSS v3 base score is 7.4 out of 10.

Is CVE-2017-12150 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Samba

CVE-2017-12150

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.

Published 2018-07-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.132 (96.3th percentile), scored 2026-10-19.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.133 · newest: 0.132 · change: -0.002

Affected products

Samba — versions 4.4.16, 4.5.14, 4.6.8
Debian Linux — versions 8.0, 9.0
Red Hat Enterprise Linux — versions 6.0, 7.0
Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
Red Hat Enterprise Linux Server — versions 6.0, 7.0
Red Hat Enterprise Linux Workstation — versions 6.0, 7.0
Red Hat Gluster Storage — versions 3.0

Weakness classification (CWE)

CWE-300 — Channel Accessible by Non-Endpoint

Public proof-of-concept exploits

kmukoo101/CVEye

References

h20566.www2.hpe.com/hpsc/doc/public/display (Third Party Advisory)
security.netapp.com/advisory/ntap-20170921-0001/ (Third Party Advisory)
access.redhat.com/errata/RHSA-2017:2790 (vendor-advisory, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Mitigation, Issue Tracking)
www.securityfocus.com/bid/100918 (VDB Entry, Third Party Advisory, vdb-entry)
support.hpe.com/hpsc/doc/public/display (Third Party Advisory)
www.samba.org/samba/security/CVE-2017-12150.html (Patch, Vendor Advisory)
www.debian.org/security/2017/dsa-3983 (vendor-advisory, Third Party Advisory)
access.redhat.com/errata/RHSA-2017:2858 (vendor-advisory, Third Party Advisory)
www.securitytracker.com/id/1039401 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-12150?: CVE-2017-12150 is a high-severity vulnerability in Samba, classified under Channel Accessible by Non-Endpoint. CVSS score: 7.4/10. Published 2018-07-26.
How severe is CVE-2017-12150?: High severity. CVSS v3 base score is 7.4 out of 10.
Is CVE-2017-12150 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.