CVE-2026-75347 EIPStackGroup OpENer - Denial of Service

EIPStackGroup OpENer v2.3 and master up to commit 76b95cf contain a denial of service caused by expired pointer dereference in EtherNet/IP Common Packet Format handling logic, letting remote attackers cause service disruption, exploit requires crafted packets.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.42% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
9 October 2026
Updated
15 October 2026
Weakness
CWE-400

Vendor fix

Update to a version after commit 76b95cf or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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