A vulnerability was detected in open62541 up to 1.5.5. Affected by this vulnerability is the function UA_DataValue_backend_copyRange of the file plugins/historydata/ua_history_data_backend_memory.c of the component History Backend. The manipulation results in use after free. The attack can be launched remotely. The exploit is now public and may be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.
History

Mon, 31 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 31 Aug 2026 06:45:00 +0000

Type Values Removed Values Added
Description A vulnerability was detected in open62541 up to 1.5.5. Affected by this vulnerability is the function UA_DataValue_backend_copyRange of the file plugins/historydata/ua_history_data_backend_memory.c of the component History Backend. The manipulation results in use after free. The attack can be launched remotely. The exploit is now public and may be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.
Title open62541 History Backend ua_history_data_backend_memory.c UA_DataValue_backend_copyRange use after free
First Time appeared Open62541
Open62541 open62541
Weaknesses CWE-119
CWE-416
CPEs cpe:2.3:a:open62541:open62541:*:*:*:*:*:*:*:*
Vendors & Products Open62541
Open62541 open62541
References
Metrics cvssV2_0

{'score': 5, 'vector': 'AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-08-31T06:15:08.682Z

Updated: 2026-08-31T16:24:19.013Z

Reserved: 2026-08-30T08:04:53.909Z

Link: CVE-2026-82623

cve-icon Vulnrichment

Updated: 2026-08-31T16:23:58.558Z

cve-icon NVD

Status : Deferred

Published: 2026-08-31T07:17:46.747

Modified: 2026-08-31T20:56:08.800

Link: CVE-2026-82623

cve-icon Redhat

No data.