Heap Buffer Overflow in lib60870

Publication date: 2026-06-29

Last updated on: 2026-06-29

Assigner: MITRE

Description

A heap buffer overflow in the HighPriorityASDUQueue_hasUnconfirmedIMessages function of lib60870 v2.3.3 to v2.3.6 allows attackers to cause a Denial of Service (DoS) via a crafted payload.

CVSS Scores

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Meta Information

Published

2026-06-29

Last Modified

2026-06-29

Generated

2026-06-30

AI Q&A

2026-06-30

EPSS Evaluated

N/A

NVD

CVE-2026-51219

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is a heap buffer overflow in the HighPriorityASDUQueue_hasUnconfirmedIMessages function of the lib60870 library versions 2.3.3 to 2.3.6. It occurs when the function processes a specially crafted payload, which can cause memory corruption.

A heap buffer overflow means that the program writes more data to a buffer located in the heap memory than it is allocated to hold, potentially overwriting adjacent memory.

Impact Analysis

Exploitation of this vulnerability can lead to a Denial of Service (DoS) condition. Attackers can cause the affected application to crash or become unresponsive by sending a crafted payload that triggers the heap buffer overflow.

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