Heap-Based Buffer Overflow in open62541 Affected by Default HistoryRead Path
CVE-2026-67860

7.5HIGH

Key Information:

Vendor

open62541

Status
open62541
Vendor
CVE Published:
4 August 2026

What is CVE-2026-67860?

The open62541 library version 1.5.5 is susceptible to a heap-based buffer overflow that occurs within the default HistoryRead path when utilizing the default history database in conjunction with the memory backend. This vulnerability could potentially be exploited to compromise the integrity and availability of the system.

References

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

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.