CVE-2026-67873

CriticalCVSS 9.8/10Last modified Aug 31, 2026

Description

A heap-based buffer overflow exists in lib60870-C 2.4.0 in the server-side FileSegment ASDU encoding path. The issue occurs because FileSegment_encode() validates only the standalone segment length via FileSegment_GetMaxDataSize() and does not verify the residual capacity of the current ASDU frame before encoding object fields and segment data

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

Timeline

Published: Aug 6, 2026
Last modified: Aug 31, 2026
NVD status: Deferred

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