Vulnerability Description
open62541 contains a heap use-after-free in the GDS PushManagement certificate update workflow when UA_ENABLE_GDS_PUSHMANAGEMENT is enabled. This allows a remote attacker to cause a denial of service.
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/open62541/open62541
- https://github.com/open62541/open62541/blob/master/arch/posix/eventloop_posix.c
- https://github.com/open62541/open62541/blob/master/examples/encryption/server_en
- https://github.com/open62541/open62541/blob/master/src/server/ua_server_internal
- https://github.com/open62541/open62541/blob/master/src/server/ua_server_ns0_gds.
- https://github.com/open62541/open62541/issues/8093
- https://github.com/open62541/open62541/issues/8093
FAQ
What is CVE-2026-67855?
CVE-2026-67855 is a vulnerability with a CVSS score of 7.5 (HIGH). open62541 contains a heap use-after-free in the GDS PushManagement certificate update workflow when UA_ENABLE_GDS_PUSHMANAGEMENT is enabled. This allows a remote attacker to cause a denial of service.
How severe is CVE-2026-67855?
CVE-2026-67855 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-2026-67855?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.