What is CVE-2024-36845?

CVE-2024-36845 is a medium-severity vulnerability in Libmodbus, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2024-05-31.

How severe is CVE-2024-36845?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2024-36845 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in Libmodbus

CVE-2024-36845

An invalid pointer in the modbus_receive() function of libmodbus v3.1.6 allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server.

Vulnerability class: DoS (Denial of Service)

Published 2024-05-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.005 (38.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Libmodbus — versions 3.1.6

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

Public proof-of-concept exploits

w4zu/Debian_

References

github.com/stephane/libmodbus/issues/750 (Exploit, Issue Tracking, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2024-36845?: CVE-2024-36845 is a medium-severity vulnerability in Libmodbus, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2024-05-31.
How severe is CVE-2024-36845?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2024-36845 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.