CVE-2021-21777

CriticalCVSS 10.0/10Last modified Jun 17, 2026

Description

An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer 2.3 and development commit 8c73bf3. A specially crafted network request can lead to an out-of-bounds read.

Metrics

CVSS 3.1 10.0/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H

Weakness enumeration

CWE-125

Affected software

No affected versions have been published.

Timeline

Published
Jun 17, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-21777: Critical severity, CVSS 10.0 | Vulnix