CVE-2024-36844

Published: May 31, 2024Modified: Nov 3, 2025

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx->backend pointer. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server.

Affected (1)

Products: Libmodbus: Libmodbus

Libmodbus

1 product

Libmodbus

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Libmodbus Libmodbus	Version 3.1.6

Related CWEs

CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (3)

https://github.com/stephane/libmodbus/issues/749

Source: cve@mitre.org

ExploitIssue TrackingVendor Advisory

https://github.com/stephane/libmodbus/issues/749

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitIssue TrackingVendor Advisory

https://lists.debian.org/debian-lts-announce/2025/03/msg00010.html

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.