CVE-2026-67855

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.

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_encryption.c
• https://github.com/open62541/open62541/blob/master/src/server/ua_server_internal.h
• https://github.com/open62541/open62541/blob/master/src/server/ua_server_ns0_gds.c
• https://github.com/open62541/open62541/issues/8093