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CVE-2026-10703— EIPStackGroup OpENer SendRRData cipmessagerouter.c CreateMessageRouterRequestStructure use after free

Quick assessment

Affected
EIPStackGroup OpENer
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.

EIPStackGroup OpENer是EIPStackGroup组织的一个用于为IO适配器设备提供EtherNet/IP堆栈功能的软件 。 EIPStackGroup OpENer 2.3.0及之前版本存在资源管理错误漏洞，该漏洞源于文件cipmessagerouter.c中组件SendRRData Handler的函数CreateMessageRouterRequestStructure，可能导致释放后重用。

CVSS 6.3 · Medium EPSS 0.24% · P14

Affected Version Matrix 4

VendorProduct Version RangeStatus
EIPStackGroup OpENer 2.0 affected
2.1 affected
2.2 affected
2.3.0 affected
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I. Basic Information for CVE-2026-10703

Vulnerability Information
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Vulnerability Title
EIPStackGroup OpENer SendRRData cipmessagerouter.c CreateMessageRouterRequestStructure use after free
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in EIPStackGroup OpENer up to 2.3.0. Affected is the function CreateMessageRouterRequestStructure of the file cipmessagerouter.c of the component SendRRData Handler. The manipulation leads to use after free. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
EIPStackGroup OpENer 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EIPStackGroup OpENer是EIPStackGroup组织的一个用于为IO适配器设备提供EtherNet/IP堆栈功能的软件 。 EIPStackGroup OpENer 2.3.0及之前版本存在资源管理错误漏洞，该漏洞源于文件cipmessagerouter.c中组件SendRRData Handler的函数CreateMessageRouterRequestStructure，可能导致释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
EIPStackGroup OpENer 2.0 cpe:2.3:a:eipstackgroup:opener:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-10703

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III. Intelligence Information for CVE-2026-10703

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Proof of Concept for CVE-2026-10703 (1)

Vendor Pages for CVE-2026-10703 (1)

Other References for CVE-2026-10703 (1)

IV. Related Vulnerabilities

Same product: OpENer
Same vendor: EIPStackGroup
Same weakness: CWE-416

V. Comments for CVE-2026-10703

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