CVE-2026-67860

HIGH CVSS 3.1: 7.5 EPSS 0.27%
Updated Aug 05, 2026
open62541
Parameter Value
CVSS 7.5 (HIGH)
Type CWE-122 (Heap-based Buffer Overflow)
Vendor open62541
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1