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Vulnerability record · CVE-2026-67860 · published 4 August 2026

CVE-2026-67860: Heap-based buffer overflow vulnerability

open62541 1.5.5 contains a heap-based buffer overflow in the default HistoryRead path when the default history database is used with the memory backend.

7.5 CVSS 3.1 High EPSS 0.46% · top 62.8% CWE-122 · Heap-based buffer overflow Deferred
7.5CVSS 3.1 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
31 Aug 2026Last modified by NVD

Description

open62541 1.5.5 contains a heap-based buffer overflow in the default HistoryRead path when the default history database is used with the memory backend.

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

References

LinkTags
https://github.com/open62541/open62541/issues/8091
https://github.com/open62541/open62541/issues/8091

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Source: NIST National Vulnerability Database (record CVE-2026-67860), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.