CVE Tools
Sign in

CVE-2021-27498

EIPStackGroup OpENer Ethernet/IP Reachable Assertion

Published: May 12, 2022Updated: Nov 21, 2024 Sources: CVE List NVD csafCWE-617
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.2%
Top 36.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-617

Affected Products

openeropener project
On-prem
Enterprise Software / erp
OpENer EtherNet/IPEIPStackGroup
On-prem
ICS / OT / IoT / industrial-network
SBOC-Q-R1BFestoICS / OT / IoT
SBOC-Q-R1B-S1FestoICS / OT / IoT
SBOC-Q-R1CFestoICS / OT / IoT
opener projectoss-projectEnterprise Softwareaka openerp, openerp
eipstackgroupICS / OT / IoTaka opener
festocommercialDEICS / OT / IoTaka festo
and 17 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/EIPStackGroup/OpENer
github.com
https://www.cisa.gov/uscert/ics/advisories/icsa-21-105-02
cisa.gov
https://festo.csaf-tp.certvde.com/.well-known/csaf/white/2021/fsa-202101.json
festo.csaf-tp.certvde.com
and 11 more references View all →

Timeline

Published
May 12, 2022
Last Updated
Nov 21, 2024

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-27498 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows