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CVE-2019-14907· NVD / CVE Program· CNA redhat

All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set with "log level = 3"

Noroxi assessment

Priority: Monitor (action score 27/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 3.1% (FIRST EPSS); higher than 87.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: samba (Alpine:v3.10) 4.10.12-r0; samba (Alpine:v3.11) 4.11.5-r0; samba (Alpine:v3.8) 4.8.12-r2.
  • Mentioned 2 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to samba (Alpine:v3.10) 4.10.12-r0; samba (Alpine:v3.11) 4.11.5-r0; samba (Alpine:v3.8) 4.8.12-r2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set with "log level = 3" (or above) then the string obtained from the client, after a failed character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange. In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to terminate. (In the file server case, the most likely target, smbd, operates as process-per-client and so a crash there is harmless).

MediumCVSS 6.5 · v3.1—No exploit Fix available
Published
Jan 21, 2020
Updated
Jun 16, 2026
EPSS
3.1% · 87th percentile

Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.1%

CNA vs NVD score

NVD
6.5
CNA · redhat
6.5
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sambasamba
fedoraprojectfedora
redhatstorage
redhatenterprise linux
canonicalubuntu linux
synologydirectory server
synologyrouter manager
synologyskynas
synologydiskstation manager
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canonical ubuntu linux16.04
  • canonical ubuntu linux18.04
  • canonical ubuntu linux19.04
  • canonical ubuntu linux19.10
  • debian debian linux9.0
  • fedoraproject fedora30
  • fedoraproject fedora31
  • redhat enterprise linux7.0
  • redhat enterprise linux8.0
  • redhat storage3.0
  • samba samba4.9.0 and later · before 4.9.18
  • samba samba4.11.0 and later · before 4.11.5
  • samba samba4.10.0 and later · before 4.10.12
  • synology directory serverall versions
  • synology diskstation manager6.2
  • synology router manager1.2
  • synology skynasall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat samba

    • All versions 4.11.x before 4.11.5, All versions 4.10.x before 4.10.12, All versions 4.9.x before 4.9.18affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.10sambafrom 4.9.0 · before 4.10.12-r04.10.12-r0
Alpine:v3.11sambafrom 4.9.0 · before 4.11.5-r04.11.5-r0
Alpine:v3.8sambafrom 4.9.0 · before 4.8.12-r24.8.12-r2
Debian:10sambabefore 2:4.9.5+dfsg-5+deb10u42:4.9.5+dfsg-5+deb10u4
Debian:12sambabefore 2:4.11.5+dfsg-12:4.11.5+dfsg-1
Debian:9sambabefore 2:4.5.16+dfsg-1+deb9u42:4.5.16+dfsg-1+deb9u4
openSUSE:Leap 15.1sambabefore 4.9.5+git.243.e76c5cb3d97-lp151.2.15.14.9.5+git.243.e76c5cb3d97-lp151.2.15.1
Red Hat:enterprise_linux:7::clientlibsmbclientbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientlibsmbclient-develbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientlibwbclientbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientlibwbclient-develbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsambabefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-clientbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-client-libsbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-commonbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-common-libsbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-common-toolsbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-dcbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-dc-libsbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-debuginfobefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-develbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-krb5-printingbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-libsbefore 0:4.10.16-5.el70:4.10.16-5.el7
Red Hat:enterprise_linux:7::clientsamba-pidlbefore 0:4.10.16-5.el70:4.10.16-5.el7

+96

Same product

samba: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-7494Samba since version 3.5.0 and before 4.6.4, 4.5.10 and 4.4.14 is vulnerable to remote code execution vulnerability, allowing a malicious cliKEV
    99Now
  • CVE-2015-0240The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before 4.1.17, and 4.2.x befor
    66This week
  • CVE-2003-0085Buffer overflow in the SMB/CIFS packet fragment re-assembly code for SMB daemon (smbd) in Samba before 2.2.8, and Samba-TNG before 0.3.1, al
    66This week

Published before and after this one in the same product

  • ← EarlierCVE-2011-3585Dec 31, 2019 · Multiple race conditions in the (1) mount.cifs and (2) umount.cifs programs in Samba 3.6 allow local users to cause a denial of service (mou
    18Monitor
  • ← EarlierCVE-2019-14902Jan 21, 2020 · There is an issue in all samba 4.11.x versions before 4.11.5, all samba 4.10.x versions before 4.10.12 and all samba 4.9.x versions before 4
    21Monitor
  • Later →CVE-2019-19344Jan 21, 2020 · There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all samba 4.10.x versions before 4.10.12 and all samba 4.11.x ver
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:samba4.10.12-r0 · Alpine:v3.10Package registry (OSV)
debian:samba2:4.11.5+dfsg-1 · Debian:12Package registry (OSV)
opensuse:samba4.9.5+git.243.e76c5cb3d97-lp151.2.15.1 · openSUSE:Leap 15.1Package registry (OSV)
red hat:ctdb0:4.11.6-104.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libsmbclient0:4.11.6-104.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libsmbclient-devel0:4.11.6-104.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libtalloc0:2.2.0-9.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libtalloc-debuginfo0:2.2.0-9.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libtalloc-devel0:2.2.0-9.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libtdb0:1.4.2-4.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libtdb-debuginfo0:1.4.2-4.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libtdb-devel0:1.4.2-4.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libtevent0:0.10.0-4.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libtevent-debuginfo0:0.10.0-4.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
red hat:libtevent-devel0:0.10.0-4.el7rhgs · Red Hat:storage:3.5:samba:el7Package registry (OSV)
suse:ldb1.5.8-3.5.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5Package registry (OSV)
suse:samba4.10.5+git.134.674d33703a6-3.3.1 · SUSE:Linux Enterprise High Availability Extension 12 SP5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records