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CVE-2019-14907

23
FAUCET Score

CVE-2019-14907 is a medium-severity vulnerability affecting Samba versions 4.9.x, 4.10.x, and 4.11.x, as well as various Linux distributions and Synology products. When Samba's log level is set to 3 or higher, a malformed string during NTLMSSP authentication can cause a long-lived process, such as the Samba AD DC RPC server, to crash. This unauthenticated denial-of-service vulnerability has a CVSS score of 6.5, indicating a network-based attack with low complexity and high impact on availability. There is no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.9.0, < 4.9.18CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.10.0, < 4.10.12CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.11.0, < 4.11.5CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.15%
Probability of exploitation in next 30 days
EPSS Percentile
86.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0315 is in the 94th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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 (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: samba-0:4.10.16-5.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: openchange-0:2.3-24.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: samba-0:4.11.2-13.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.5 for RHEL 7Fixed in: libtalloc-0:2.2.0-9.el7rhgs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.5 for RHEL 7Fixed in: libtdb-0:1.4.2-4.el7rhgs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.5 for RHEL 7Fixed in: libtevent-0:0.10.0-4.el7rhgs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.5 for RHEL 7Fixed in: samba-0:4.11.6-104.el7rhgs
View patch

Vendor Advisories (1)

redhatCVE-2019-14907Moderate

samba: Crash after failed character conversion at log level 3 or above

Jan 21, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-01/msg00055.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2021/05/msg00023.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2023/09/msg00013.html
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/4ACZVNMIFQGGXNJPMHAVBN3H2U65FXQY
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/GQ6U65I2K23YJC4FESW477WL55TU3PPT
security.gentoo.org / glsa/202003-52
Third Party Advisory
security.netapp.com / advisory/ntap-20200122-0001
Third Party Advisory
usn.ubuntu.com / 4244-1
Third Party Advisory
samba.org / samba/security/CVE-2019-14907.html
Vendor Advisory
synology.com / security/advisory/Synology_SA_20_01
Third Party Advisory