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CVE-2026-82623— open62541 History Backend ua_history_data_backend_memory.c UA_DataValue_backend_copyRange use after free

Quick assessment

Affected
n/a open62541
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-82623

Vulnerability Information

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Vulnerability Title
open62541 History Backend ua_history_data_backend_memory.c UA_DataValue_backend_copyRange use after free
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- open62541 1.5.0 cpe:2.3:a:open62541:open62541:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82623

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III. Intelligence Information for CVE-2026-82623

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Other References for CVE-2026-82623 (1)

Other References for CVE-2026-82623 (3)

Same Patch Batch · n/a · 2026-08-31 · 9 CVEs total

CVE-2026-82608 7.4 HIGH Kamailio AVP cxdx_avp.c get_4bytes out-of-bounds
CVE-2026-82600 7.3 HIGH SeaCMS zyapi.php sql injection
CVE-2026-82598 7.3 HIGH SeaCMS Template search.php parseIf code injection
CVE-2026-82603 5.4 MEDIUM SeaCMS Comment Cache member.php del_pl path traversal
CVE-2026-82599 5.4 MEDIUM SeaCMS Avatar Upload member.php unlink path traversal
CVE-2026-82602 5.3 MEDIUM SeaCMS ass.php authorization
CVE-2026-82601 4.3 MEDIUM SeaCMS err.php cross site scripting
CVE-2026-82596 3.3 LOW LatencyUtils PauseDetector LatencyStats.java LatencyStats.recordDetectedPause memory corru

IV. Related Vulnerabilities

Same product: open62541
Same vendor: n/a
Same weakness: CWE-416

V. Comments for CVE-2026-82623

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