CVE-2024-36844 — HIGH (7.5)

Vulnerability 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.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Libmodbus	Libmodbus	3.1.6

Related Weaknesses (CWE)

CWE-416

References

https://github.com/stephane/libmodbus/issues/749ExploitIssue TrackingVendor Advisory
https://github.com/stephane/libmodbus/issues/749ExploitIssue TrackingVendor Advisory
https://lists.debian.org/debian-lts-announce/2025/03/msg00010.html

FAQ

What is CVE-2024-36844?

CVE-2024-36844 is a vulnerability with a CVSS score of 7.5 (HIGH). 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-...

How severe is CVE-2024-36844?

CVE-2024-36844 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2024-36844?

Check the references section above for vendor advisories and patch information. Affected products include: Libmodbus Libmodbus.