CVE-2026-75351

OpENer v2.3 EtherNet/IP ForwardOpen Out‑of‑Bounds Read Causes Denial of Service

Published Oct 9, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
OpENer v2.3/commit 76b95cf, contains an out-of-bounds read in the server-side EtherNet/IP ForwardOpen connection-path parser. This allows a remote attacker to cause a denial of service.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title OpENer v2.3 EtherNet/IP ForwardOpen Out‑of‑Bounds Read Causes Denial of Service
Type Values Removed Values Added
Title Out‑of‑Bounds Read in OpENer EtherNet/IP ForwardOpen Parser Causes DoS
Weaknesses CWE-119
CWE-20
Type Values Removed Values Added
Weaknesses CWE-125
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Type Values Removed Values Added
Title Out‑of‑Bounds Read in OpENer EtherNet/IP ForwardOpen Parser Causes DoS
First Time appeared Eipstackgroup
Eipstackgroup opener
Weaknesses CWE-119
CWE-20
Vendors & Products Eipstackgroup
Eipstackgroup opener
Type Values Removed Values Added
Description OpENer v2.3/commit 76b95cf, contains an out-of-bounds read in the server-side EtherNet/IP ForwardOpen connection-path parser. This allows a remote attacker to cause a denial of service.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 9, 2026, 8:35 PM
Reserved
Aug 17, 2026, 12:00 AM
Status
Awaiting Analysis
Published
Oct 9, 2026, 7:16 PM
Modified
Oct 16, 2026, 5:16 PM