CVE-2026-75347

EIPStackGroup OpENer v2.3 and master up to commit 76b95cf contain an expired pointer dereference...

7.5 High

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.51%Up 0.1 points since Oct 10, 2026

What each source reports

CVE List Score used 7.5

Record: CVE-2026-75347
CVSS 3.1: 7.5 HighCVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N
Weakness: CWE-400
Updated: 2026-11-02

EUVDEUVD-2026-95916 7.5

Record: EUVD-2026-95916
CVSS 3.1: 7.5 HighCVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-cmxj-3q64-8hph 7.5

EIPStackGroup OpENer v2.3 and master up to commit 76b95cf contain an expired pointer dereference...

Record: GHSA-cmxj-3q64-8hph
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-400
Updated: 2026-11-02

NVD 7.5

Record: CVE-2026-75347
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-400
Updated: 2026-11-02

OSV 7.5

Record: CVE-2026-75347
CVSS 3.1: 7.5 HighCVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N
Updated: 2026-11-02

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-75347 is a high vulnerability (CVSS 7.5), published October 9, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 43rd percentile. No source names a fixed version.