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CVE-2017-12150

26
FAUCET Score

CVE-2017-12150 describes a vulnerability in Samba versions before 4.4.16, 4.5.14, and 4.6.8, where SMB signing was not enforced even when configured, affecting Debian, Red Hat, and Samba products. This flaw allows a remote attacker to conduct a man-in-the-middle attack with high complexity (AC:H) to retrieve sensitive information in plaintext, resulting in a CVSS score of 7.4 (High) for confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating low current exploitation risk.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.25, < 4.4.16CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.5.0, < 4.5.14CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.6.0, < 4.6.8CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.4HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
13.33%
Probability of exploitation in next 30 days
EPSS Percentile
96.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.1333 is in the 79th percentile among its peer group of 8,913 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

microsoftpatch availablevia msrc
Product: 16864-16817Fixed in: 4.18.3-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 4.18.3-1
microsoftpatch availablevia msrc
Product: azl3 samba 4.18.3-1 on Azure Linux 3.0Fixed in: 4.18.3-1
microsoftpatch availablevia msrc
Product: 16864-17084Fixed in: 4.18.3-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 4.18.3-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: samba-0:4.6.2-11.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: samba-0:3.6.23-45.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: samba4-0:4.2.10-11.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.3 for RHEL 6Fixed in: samba-0:4.6.3-6.el6rhs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.3 for RHEL 7Fixed in: samba-0:4.6.3-6.el7rhgs
View patch
redhatworkaround availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: samba3x
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: samba

Vendor Advisories (3)

microsoft2024-Oct/CVE-2017-12150

CVE-2017-12150

Oct 8, 2024
microsoft2018-Jul/CVE-2017-12150Important

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.

Jul 10, 2018
redhatCVE-2017-12150Moderate

samba: Some code path don't enforce smb signing, when they should

Sep 20, 2017

References

access.redhat.com / errata/RHSA-2017:2789
Third Party Advisory
access.redhat.com / errata/RHSA-2017:2790
Third Party Advisory
access.redhat.com / errata/RHSA-2017:2791
Third Party Advisory
access.redhat.com / errata/RHSA-2017:2858
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingMitigationThird Party Advisory
h20566.www2.hpe.com / hpsc/doc/public/display
Third Party Advisory
security.netapp.com / advisory/ntap-20170921-0001
Third Party Advisory
support.hpe.com / hpsc/doc/public/display
Third Party Advisory
debian.org / security/2017/dsa-3983
Third Party Advisory
samba.org / samba/security/CVE-2017-12150.html
PatchVendor Advisory
securityfocus.com / bid/100918
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039401
Third Party AdvisoryVDB Entry