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Fencer Vulns
critical 9.1

CVE-2019-14463 json

An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5.

published 2019-07-31 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-5649

cvss
9.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

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.

Patch / fix

  • libmodbus libmodbus 3.0.7, 3.1.5
  • libmodbus Debian 14, Debian 13, Debian 12 3.1.6-1

debian advisories DEBIAN-CVE-2019-14463

  • libmodbus Ubuntu 18.04 LTS 3.0.6-2+deb9u1build0.18.04.1
  • libmodbus Ubuntu Pro 14.04 LTS 3.0.5-1ubuntu0.1~esm1
  • libmodbus Ubuntu Pro 16.04 LTS 3.0.6-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2019-14463

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-14463 updated cvss 6.5

libmodbus: out-of-bounds read in MODBUS_FC_WRITE_MULTIPLE_COILS

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.93% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.