CVE-2026-51221

OpENer Network Stack Buffer Overflow Enables Denial of Service via CPF Packet

Published Jun 29, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A buffer overflow in the Get_Attribute_List function of EIPStackGroup OpENer commit 76b95c allows attackers to cause a Denial of Service (DoS) via supplying a crafted Common Packet Format (CPF) packet.

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
Title OpENer Network Stack Buffer Overflow Enables Denial of Service via CPF Packet
Type Values Removed Values Added
Title Get_Attribute_List Buffer Overflow Enables Denial of Service
Weaknesses CWE-120
CWE-787
Type Values Removed Values Added
Weaknesses CWE-284
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'}

ssvc

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

Type Values Removed Values Added
First Time appeared Eipstackgroup
Eipstackgroup opener
Vendors & Products Eipstackgroup
Eipstackgroup opener
Type Values Removed Values Added
Title Get_Attribute_List Buffer Overflow Enables Denial of Service
Weaknesses CWE-120
CWE-787
Type Values Removed Values Added
Description A buffer overflow in the Get_Attribute_List function of EIPStackGroup OpENer commit 76b95c allows attackers to cause a Denial of Service (DoS) via supplying a crafted Common Packet Format (CPF) packet.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jun 30, 2026, 1:17 PM
Reserved
Jun 7, 2026, 12:00 AM
Status
Deferred
Published
Jun 29, 2026, 10:16 PM
Modified
Jun 30, 2026, 2:22 PM