CVE-2026-75347

EIPStackGroup OpENer v2.3 and master up to commit 76b95cf contain an expired pointer dereference vulnerability in the EtherNet/IP Common Packet Format (CPF) handling logic. This allows a remote attacker to cause a denial of service.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-25)

CWE

CWE-400

Published

2026-10-09

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

References

• https://github.com/EIPStackGroup/OpENer/blob/master/source/src/enet_encap/cpf.c
• https://github.com/EIPStackGroup/OpENer/blob/master/source/src/enet_encap/encap.c
• https://github.com/EIPStackGroup/OpENer/blob/master/source/src/ports/generic_networkhandler.c
• https://github.com/EIPStackGroup/OpENer/issues/575
• https://github.com/EIPStackGroup/OpENer/issues/575

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