CVE-2024-36843 - Vulnerability Details - OpenCVE

libmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation poc

Automatable yes

Technical Impact partial

Vendors	Products
Libmodbus	Libmodbus

Configuration 1 [-]

cpe:2.3:a:libmodbus:libmodbus:3.1.6:*:*:*:*:*:*:*

No data.

References

Link	Providers
https://github.com/balckgu1/libmodbusPoc/blob/main/gdb.md
https://github.com/stephane/libmodbus/issues/748
https://lists.debian.org/debian-lts-announce/2025/03/msg00010.html

History

Mon, 03 Nov 2025 21:30:00 +0000

Type	Values Removed	Values Added
References		https://lists.debian.org/debian-lts-announce/2025/03/msg00010.html

Mon, 03 Nov 2025 21:15:00 +0000

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:libmodbus:libmodbus::::::::
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sun, 13 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.00565}`	epss `{'score': 0.00433}`

Sat, 12 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.00403}`	epss `{'score': 0.00565}`

Thu, 01 May 2025 14:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Libmodbus Libmodbus libmodbus
CPEs		cpe:2.3:a:libmodbus:libmodbus:3.1.6:::::::*
Vendors & Products		Libmodbus Libmodbus libmodbus

Thu, 22 Aug 2024 19:00:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-122
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2024-05-31T00:00:00.000Z

Updated: 2025-11-03T20:37:51.145Z

Reserved: 2024-05-30T00:00:00.000Z

Link: CVE-2024-36843

Vulnrichment

Updated: 2025-11-03T20:37:51.145Z

NVD

Status : Modified

Published: 2024-05-31T20:15:10.290

Modified: 2025-11-03T21:16:13.037

Link: CVE-2024-36843

Redhat

No data.

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