What is CVE-2026-67873?

CVE-2026-67873 is a critical-severity vulnerability in N/a, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-08-06.

How severe is CVE-2026-67873?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in N/a

CVE-2026-67873

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…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

cve@mitre.org
cve@mitre.org
cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2026-67873?: CVE-2026-67873 is a critical-severity vulnerability in N/a, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-08-06.
How severe is CVE-2026-67873?: Critical severity. CVSS v3 base score is 9.8 out of 10.