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Vulnerability record · CVE-2026-51221 · published 29 June 2026

CVE-2026-51221: Improper access control vulnerability

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.

7.5 CVSS 3.1 High EPSS 0.49% · top 60.5% CWE-284 · Improper access control Deferred
7.5CVSS 3.1 base score
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
30 Jun 2026Last modified by NVD

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.

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

References

LinkTags
https://github.com/EIPStackGroup/OpENer
https://github.com/EIPStackGroup/OpENer/issues/567
https://github.com/EIPStackGroup/OpENer/issues/567

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-51221), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.