Is CVE-2026-75350 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-75350 being exploited in the wild.

How severe is CVE-2026-75350?

High severity, with a CVSS score of 7.5, published 9 October 2026.

Which products and versions are affected?

EIPStackGroup OpENer v2.3 and master branch (commit 76b95cf).

Is there a fix for CVE-2026-75350?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-75350 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-75350?

Check whether you run EIPStackGroup OpENer at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-75350: EIPStackGroup OpENer buffer overflow in GetAttributeList

CVE-2026-75350 · Severity: high · CVSS 7.5 · Published 2026-10-09

OpENer is an EtherNet/IP protocol stack used in industrial I/O adapter devices to enable network communication with factory equipment. A buffer overflow vulnerability in the GetAttributeList service handler allows a remote attacker to send a specially crafted network message that crashes the device, causing operational downtime.

Technologies: EIPStackGroup OpENer. Vendors: EIPStackGroup.

Quick answers

Is CVE-2026-75350 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-75350 being exploited in the wild.
How severe is CVE-2026-75350?: High severity, with a CVSS score of 7.5, published 9 October 2026.
Which products and versions are affected?: EIPStackGroup OpENer v2.3 and master branch (commit 76b95cf).
Is there a fix for CVE-2026-75350?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-75350 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-75350?: Check whether you run EIPStackGroup OpENer at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The GetAttributeList() function in cipcommon.c fails to properly validate input length when handling EtherNet/IP Get_Attribute_List service requests, leading to a stack or heap buffer overflow. An unauthenticated remote attacker can exploit this over the network by sending a malformed EtherNet/IP packet, causing denial of service through device crash or memory corruption.

Affected products

EIPStackGroup OpENer v2.3 and master branch (commit 76b95cf)

Timeline

2026-10-09: disclosed

References

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