What is CVE-2024-36844?

CVE-2024-36844 is a high-severity vulnerability in Libmodbus, classified under Use After Free. CVSS score: 7.5/10. Published 2024-05-31.

How severe is CVE-2024-36844?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2024-36844 known to be exploited?

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

Use After Free in Libmodbus

CVE-2024-36844

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.

Vulnerability class: Use-After-Free

EPSS: 0.006 (45.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Libmodbus — versions 3.1.6
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

w4zu/Debian_

References

cve@mitre.org (Exploit, Issue Tracking, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2024-36844?: CVE-2024-36844 is a high-severity vulnerability in Libmodbus, classified under Use After Free. CVSS score: 7.5/10. Published 2024-05-31.
How severe is CVE-2024-36844?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2024-36844 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.