CVE-2026-67857

HIGH CVSS 3.1: 7.5 EPSS 0.35%
Updated Aug 05, 2026
N/A
Parameter Value
CVSS 7.5 (HIGH)
Type CWE-125 (Out-of-bounds Read)
Vendor N/A
Public PoC No

open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray() in src/client/ua_client_connect.c.

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

Weakness Type (CWE)

Vulnerable Products

n/a:n/a