CVE Tools
Sign in

CVE-2021-20987

Hilscher: EtherNet/IP stack crash for specific CIP service

Published: Feb 16, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-787
NVD MITRE
8.6CVSSHIGH
EPSS Score
1.1%
Top 38.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A denial of service and memory corruption vulnerability was found in Hilscher EtherNet/IP Core V2 prior to V2.13.0.21that may lead to code injection through network or make devices crash without recovery.

CVSS Vector Breakdown

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

Weaknesses

CWE-787

Affected Products

ethernet\/ip adapter firmwarehilscher
Embedded
ICS / OT / IoT / industrial-network
wcs firmwarepepperl-fuchsICS / OT / IoT
pxv100-f200-b25-v1d firmwarepepperl-fuchsICS / OT / IoT
pxv100i-f200-b25-v1d firmwarepepperl-fuchsICS / OT / IoT
pcv100-f200-b25-v1d-6011-6720 firmwarepepperl-fuchsICS / OT / IoT
hilschercommercialDEICS / OT / IoTaka ethernet/ip adapter firmware, profinet io device
pepperl-fuchscommercialDEICS / OT / IoT
and 6 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

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://cert.vde.com/en-us/advisories/vde-2021-007
cert.vde.com
https://kb.hilscher.com/pages/viewpage.action?pageId=108969480
kb.hilscher.com

Timeline

Published
Feb 16, 2021
Last Updated
Nov 21, 2024

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-20987 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