CVE-2023-26793 - Vulnerability Details - OpenCVE

Description

libmodbus v3.1.10 has a heap-based buffer overflow vulnerability in read_io_status function in src/modbus.c.

Published: 2024-05-01

Score: 9.8 Critical

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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:3.1.10:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00892.

Exploitation poc

Automatable no

Technical Impact total

References

Link	Providers
https://github.com/stephane/libmodbus/issues/683

History

Wed, 25 Feb 2026 19:15:00 +0000

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:libmodbus:libmodbus:3.1.0:::::::*
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Mon, 05 May 2025 17:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Libmodbus Libmodbus libmodbus
CPEs		cpe:2.3:a:libmodbus:libmodbus:3.1.10:::::::*
Vendors & Products		Libmodbus Libmodbus libmodbus

Subscriptions

Libmodbus Libmodbus

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2024-05-01T00:00:00.000Z

Updated: 2024-08-02T11:53:54.382Z

Reserved: 2023-02-27T00:00:00.000Z

Link: CVE-2023-26793

Vulnrichment

Updated: 2024-08-02T11:53:54.382Z

NVD

Status : Analyzed

Published: 2024-05-01T19:15:21.123

Modified: 2025-05-05T17:21:25.887

Link: CVE-2023-26793

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-122

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