What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-03 · updated 2026-07-22
• Weakness: CWE-119

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.

Affected products

• EIPStackGroup OpENer EtherNet/IP: 2.0, 2.1, 2.2, 2.3.0

References

• https://github.com/EIPStackGroup/OpENer/
• https://github.com/EIPStackGroup/OpENer/issues/566
• https://github.com/user-attachments/files/27100961/poc.zip
• https://vuldb.com/cve/CVE-2026-10703
• https://vuldb.com/submit/830921
• https://vuldb.com/vuln/368016
• https://vuldb.com/vuln/368016/cti

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