Vulnerability Description
open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray() in src/client/ua_client_connect.c.
CVSS Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Related Weaknesses (CWE)
References
- https://github.com/gff-cw/information/issues/9
- https://github.com/open62541/open62541/blob/v1.5.5/examples/client_connect.c
- https://github.com/open62541/open62541/blob/v1.5.5/examples/client_connect_loop.
- https://github.com/open62541/open62541/blob/v1.5.5/src/client/ua_client_connect.
- https://github.com/open62541/open62541/issues/8104
- https://github.com/open62541/open62541/issues/8104
FAQ
What is CVE-2026-67857?
CVE-2026-67857 is a vulnerability with a CVSS score of 7.5 (HIGH). open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray() in src/client/ua_client_connect.c.
How severe is CVE-2026-67857?
CVE-2026-67857 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-67857?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.