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CVE-2019-14463

32
FAUCET Score

CVE-2019-14463 is a critical out-of-bounds read vulnerability (CWE-125) affecting libmodbus versions prior to 3.0.7 and 3.1.5, specifically within the MODBUS_FC_WRITE_MULTIPLE_REGISTERS case. This flaw impacts various distributions including Debian and Fedora that utilize the vulnerable libmodbus library. With a CVSS score of 9.1 (CRITICAL), this vulnerability is remotely exploitable with low attack complexity, potentially leading to high confidentiality and availability impacts. While there is no evidence of active exploitation, nor publicly available exploit code in Metasploit or ExploitDB, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.0.7CPE matchmatch criteria
cpe:2.3:a:libmodbus:libmodbus:*:*:*:*:*:*:*:*
>= 3.1.0, < 3.1.5CPE matchmatch criteria
cpe:2.3:a:libmodbus:libmodbus:*:*:*:*:*:*:*:*
29CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.93%
Probability of exploitation in next 30 days
EPSS Percentile
77.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0193 is in the 66th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / stephane/libmodbus/commit/5ccdf5ef79d742640355d1132fa9e2abc7fbaefc
PatchThird Party Advisory
libmodbus.org / 2019/stable-and-development-releases
Release NotesVendor Advisory
lists.debian.org / debian-lts-announce/2021/11/msg00020.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/HAGHQFJTJCMYHW553OUWJ3YIJR6PJHB7
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/PRAQZXGAZY6UGWZ6CD33QEFLL7AWW233