CVE-2019-14907Network attack vector

Service crash via out-of-bounds conversion-error logging

Published Jan 21, 2020 · Updated Aug 5, 2024

Out-of-bounds read in Samba 4.9.x before 4.9.18, 4.10.x before 4.10.12, and 4.11.x before 4.11.5 allows remote attackers to crash services. The conversion-error logging path prints a client-supplied string after failed character conversion without respecting the allocated buffer boundary. Log level 3 or higher is required; an NTLMSSP exchange can terminate a long-lived AD DC process, while an smbd child crash affects only its client.

CVSS severity6.5
Medium
EPSS probability3.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Samba 4.9.x before 4.9.18, 4.10.x before 4.10.12, and 4.11.x before 4.11.5 allows remote attackers to crash services. The conversion-error logging path prints a client-supplied string after failed character conversion without respecting the allocated buffer boundary. Log level 3 or higher is required; an NTLMSSP exchange can terminate a long-lived AD DC process, while an smbd child crash affects only its client.

The record

CVE
CVE-2019-14907
Published
Jan 21, 2020
Updated
Aug 5, 2024
Vendor
Red Hat
Product
Samba
Classifications
CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 21, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions 4.10.x before 4.10.12
  2. Affected versionversion=All versions 4.11.x before 4.11.5
  3. Affected versionversion=All versions 4.9.x before 4.9.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Red Hat · Sambaversion=All versions 4.10.x before 4.10.12; version=All versions 4.11.x before 4.11.5; version=All versions 4.9.x before 4.9.18

Published CVSS scores

2.6NIST NVDAV:N/AC:H/Au:N/C:N/I:N/A:P
6.5Red Hat, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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