CVE-2026-67860

HIGH

open62541 1.5.5 - Heap-Based Buffer Overflow in HistoryRead Memory Backend

Title source: llm

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.

References (1)

Core 1

Core References

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

Scores

CVSS v3 7.5

EPSS 0.0027

EPSS Percentile 18.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-122

Status published

Published Aug 04, 2026

Tracked Since Aug 05, 2026