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Vulnerability record · CVE-2026-51219 · published 29 June 2026

CVE-2026-51219: Heap-based buffer overflow vulnerability

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.

7.5 CVSS 3.1 High EPSS 0.66% · top 50.5% CWE-122 · Heap-based buffer overflow Deferred
7.5CVSS 3.1 base score
0.66%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
4 Aug 2026Last modified by NVD

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

References

LinkTags
https://github.com/mz-automation/lib60870
https://github.com/mz-automation/lib60870/issues/196
https://github.com/mz-automation/lib60870/releases
https://github.com/mz-automation/lib60870/issues/196

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Source: NIST National Vulnerability Database (record CVE-2026-51219), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.