CVE-2021-21777

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    CVE-2021-21777

    Published: 17 Jun 2021Last Modified: 7 Aug 2026

    Summary:

    Details: 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.

    References: https://talosintelligence.com/vulnerability_reports/TALOS-2021-1234

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 150146e3058a493d5accf6d5f76ff450468d7bd7
    Fixed -None

    Affected versions

    2.3

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-21777 | CVE-DB