← Back to results
Vulnerability record · public intelligence
CVE-2021-27498
HIGH
EIPStackGroup OpENer Ethernet/IP Reachable Assertion
Published May 12, 2022 · Updated Nov 3, 2026
Severity · CVSSHIGH · Not scored
Known exploitationNot listed
EPSS / likelihood1.35%
QFinch risk scoreNot available
Original summary
Normalized public record · Updated Nov 3, 2026
EIPStackGroup OpENer Ethernet/IP Reachable Assertion
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
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.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
FIRST-EPSSCVE-LIST-V5
- SSVC priority
- MEDIUM
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
Record history
Published May 12, 2022 · Last refreshed Nov 3, 2026