CVE-2019-14463

Name: CVE-2019-14463
Creator: NVD / NIST
Published: 2019-07-31T23:15:11.013+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.93%

Last modified Jun 17, 2026

CVE-2019-14463 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. There is an out-of-bounds read for the MODBUS_FC_WRITE_MULTIPLE_REGISTERS case, aka VD-1301.. EPSS estimates a 1.93% chance of exploitation in the next 30 days.

Description

An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. There is an out-of-bounds read for the MODBUS_FC_WRITE_MULTIPLE_REGISTERS case, aka VD-1301.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

1.93%

77.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Libmodbus	Libmodbus	< 3.0.7
Libmodbus	Libmodbus	>= 3.1.0, < 3.1.5
Fedoraproject	Fedora	29
Fedoraproject	Fedora	30
Debian	Debian Linux	9.0

References

https://github.com/stephane/libmodbus/commit/5ccdf5ef79d742640355d1132fa9e2abc7fbaefcPatch, Third Party Advisory
https://libmodbus.org/2019/stable-and-development-releases/Release Notes, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00020.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HAGHQFJTJCMYHW553OUWJ3YIJR6PJHB7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PRAQZXGAZY6UGWZ6CD33QEFLL7AWW233/
https://github.com/stephane/libmodbus/commit/5ccdf5ef79d742640355d1132fa9e2abc7fbaefcPatch, Third Party Advisory
https://libmodbus.org/2019/stable-and-development-releases/Release Notes, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00020.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HAGHQFJTJCMYHW553OUWJ3YIJR6PJHB7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PRAQZXGAZY6UGWZ6CD33QEFLL7AWW233/

Timeline

Published: Jul 31, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-14463?

An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. There is an out-of-bounds read for the MODBUS_FC_WRITE_MULTIPLE_REGISTERS case, aka VD-1301.

How severe is CVE-2019-14463?

CVE-2019-14463 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.93% probability of exploitation in the next 30 days.

How do I fix CVE-2019-14463?

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-2019-14463?

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

Scan your code now

Source: NVD / NIST