Cyber Resilience

CVE-2024-36843

HighPublic PoC

Published: 31 May 2024

Published
31 May 2024
Modified
03 November 2025
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0075 73.6th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-36843 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Libmodbus Libmodbus. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation of Remote Services (T1210); ranked in the top 26.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

libmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function.

CWE(s)
CWE-122

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
Why these techniques?

Heap overflow in libmodbus via modbus_mapping_free() can be triggered remotely through crafted Modbus protocol requests, enabling exploitation of remote services for code execution.

Affected Assets

libmodbus
libmodbus
3.1.6

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References