CVE-2019-19344

Name: CVE-2019-19344
Creator: NVD / NIST
Published: 2020-01-21T18:15:12.937+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 3.07%

Last modified Jun 17, 2026

CVE-2019-19344 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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 versions before 4.11.5, essentially due to a call to realloc() while other local variables still point at the original buffer.. EPSS estimates a 3.07% chance of exploitation in the next 30 days.

Description

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 versions before 4.11.5, essentially due to a call to realloc() while other local variables still point at the original buffer.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

3.07%

86.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Samba	Samba	>= 4.9.0, < 4.9.18
Samba	Samba	>= 4.10.0, < 4.10.12
Samba	Samba	>= 4.11.0, < 4.11.5
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.04
Canonical	Ubuntu Linux	19.10
Synology	Directory Server	All versions
Synology	Router Manager	1.2
Synology	Skynas	All versions
Synology	Diskstation Manager	6.2
Opensuse	Leap	15.1

References

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00055.htmlThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19344Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ACZVNMIFQGGXNJPMHAVBN3H2U65FXQY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GQ6U65I2K23YJC4FESW477WL55TU3PPT/
https://security.gentoo.org/glsa/202003-52
https://security.netapp.com/advisory/ntap-20200122-0001/Third Party Advisory
https://usn.ubuntu.com/4244-1/Third Party Advisory
https://www.samba.org/samba/security/CVE-2019-19344.htmlVendor Advisory
https://www.synology.com/security/advisory/Synology_SA_20_01Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00055.htmlThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19344Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ACZVNMIFQGGXNJPMHAVBN3H2U65FXQY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GQ6U65I2K23YJC4FESW477WL55TU3PPT/
https://security.gentoo.org/glsa/202003-52
https://security.netapp.com/advisory/ntap-20200122-0001/Third Party Advisory
https://usn.ubuntu.com/4244-1/Third Party Advisory
https://www.samba.org/samba/security/CVE-2019-19344.htmlVendor Advisory
https://www.synology.com/security/advisory/Synology_SA_20_01Third Party Advisory

Timeline

Published: Jan 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19344?

How severe is CVE-2019-19344?

CVE-2019-19344 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 3.07% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19344?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-19344?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST