Home/CVE/A heap-based buffer overflow flaw was found in libmodbus in function modbus_reply() in src/modbus.c.
CVE

CVE-2022-0367

A heap-based buffer overflow flaw was found in libmodbus in function modbus_reply() in src/modbus.c.

A heap-based buffer overflow flaw was found in libmodbus in function modbus_reply() in src/modbus.c.

HIGH · CVSS 7.8 EPSS 0.00046
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

4
libmodbus< 3.1.7
fedoraproject extra packages for enterprise linuxall versions
fedoraproject fedoraall versions
debian linuxall versions
⚠

Public Exploits & PoCs

1
pocgithub.com · issues/614github.com
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Aug 2022 · 03:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2022:10196-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=2045571Issue TrackingThird Party Advisory
https://github.com/stephane/libmodbus/commit/b4ef4c17d618eba0adccc4c7d9e9a1ef809fc9b6PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00007.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2025/03/msg00010.html
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