CVE-2024-36843

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Published May 31, 2024 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Description

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

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

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

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Debian DLA	DLA-4084-1	libmodbus security update

Metrics

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.

Exploit prediction score: < 1% (0.790% probability within 30 days)

Exploitation poc

Automatable yes

Technical Impact partial

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

Nov 3, 2025 9:30 PM Added references View changes

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

Nov 3, 2025 9:15 PM Affected versions updated. Scoring metrics updated View changes

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'}`

Jul 13, 2025 1:45 PM Scoring metrics updated View changes

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

Jul 12, 2025 1:45 PM Scoring metrics updated View changes

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

May 1, 2025 2:15 PM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

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

Aug 22, 2024 7:00 PM Weaknesses updated. Scoring metrics updated View changes

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'}`

Earlier changes (1)

Subscriptions

Libmodbus Libmodbus

Weaknesses

CWE-122

Sources

CVE record Updated: Nov 3, 2025, 8:37 PM

Status: PUBLISHED
Assigner: mitre
Published: May 31, 2024, 12:00 AM
Updated: Nov 3, 2025, 8:37 PM
Reserved: May 30, 2024, 12:00 AM

View source JSON

Vulnrichment Updated: Nov 3, 2025, 8:37 PM

Updated: Nov 3, 2025, 8:37 PM

NVD Updated: Jun 17, 2026, 7:37 AM

Status: Modified
Published: May 31, 2024, 8:15 PM
Modified: Jun 17, 2026, 7:37 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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