CVE-2026-67855

7.5 highEPSS 0.5%

High (7.5). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)
CWE: CWE-400
Published: 2026-08-04
Modified: 2026-08-31
Record from: the NVD, synced 2026-10-19

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

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