CVE-2021-27482

EIPStackGroup OpENer Ethernet/IP Out-of-bounds Read

HIGH

7.5

CVSS Score

Published: May 12, 2022 at 07:18 PM UTC

Updated: June 17, 2026 at 03:44 AM UTC

2 products affected across 2 vendorsOpenerProject Opener

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

SSVC

No known exploit

Description

A specifically crafted packet sent by an attacker to EIPStackGroup OpENer EtherNet/IP commits and versions prior to Feb 10, 2021 may allow the attacker to read arbitrary data.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Opener · Opener Project

95%

v ≤ 2.3

Project Opener · Eipstackgroup

60%

v < Feb 10, 2021

Affected range stops below Feb 10, 2021, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://github.com/EIPStackGroup/OpENer

x_refsource_CONFIRMThird Party AdvisoryUS Government Resource

Source: [email protected]

https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHicscert

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-125

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