CVE-2026-82623

MEDIUM 5.3

open62541 History Backend ua_history_data_backend_memory.c UA_DataValue_backend_copyRange use after free

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-416 CWE-119
Vendor	n/a
Product	open62541
Published	Aug 31, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / open62541

1.5.0 1.5.1 1.5.2 1.5.3 1.5.4 1.5.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/397123 vuldb.com: https://vuldb.com/vuln/397123/cti vuldb.com: https://vuldb.com/cve/CVE-2026-82623 vuldb.com: https://vuldb.com/submit/893207 github.com: https://github.com/open62541/open62541/issues/8199 github.com: https://github.com/open62541/open62541/

Credits

🔍 VULL (VulDB User) VulDB CNA Team