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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.51% probability · 43th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Source
- cve@mitre.org
EPSS moved from 0.4% on 10 October 2026 to 0.5% on 26 October 2026.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.