What’s Vulnerable › Vulnerabilities

CVE-2026-51221

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-29 · updated 2026-06-30
• Weakness: CWE-284

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

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

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