CVE-2021-27498

EIPStackGroup OpENer Ethernet/IP Reachable Assertion

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Published May 12, 2022 CVSS 3.1 · 7.5 High EPSS 1.3% KEV · Not listed

Description

A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may result in a denial-of-service condition.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

EIPStackGroup

OpENer EtherNet/IP

affected

Version	Status	Constraints
`unspecified`	affected	< Feb 10, 2021

Configuration 1 [-]

cpe:2.3:a:opener_project:opener:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

Vendor Solution

The maintainer of OpENer recommends those affected to apply the latest commits available.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-14252	A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may result in a denial-of-service condition.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: 1.3% (1.309% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://github.com/EIPStackGroup/OpENer
https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02

History

Apr 16, 2025 5:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Opener Project Opener

Weaknesses

CWE-617

Sources

CVE record Updated: Apr 16, 2025, 4:22 PM

Status: PUBLISHED
Assigner: icscert
Published: May 12, 2022, 7:18 PM
Updated: Apr 16, 2025, 4:22 PM
Reserved: Feb 19, 2021, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 3, 2024, 9:26 PM

Updated: Aug 3, 2024, 9:26 PM

NVD Updated: Jun 17, 2026, 3:44 AM

Status: Modified
Published: May 12, 2022, 8:15 PM
Modified: Jun 17, 2026, 3:44 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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