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CVE-2021-40142

Published: Aug 27, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-119
7.5HIGH
NVD MITRE
EPSS Score
2.6%
Top 16.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer.

No summary for this CVE yet.

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-119

Affected Products

Siemens AG
commercial·DEaka siemens
SIMATIC WinCC Runtime Professional
ICS / OT / IoT
Siemens SIMATIC NET PC Software
ICS / OT / IoT
SIMATIC Process Historian
ICS / OT / IoT
SIMATIC WinCC
ICS / OT / IoT
SIMATIC WinCC Unified Scada Runtime
ICS / OT / IoT
TeleControl Server Basic
ICS / OT / IoT
simatic process historian opc ua server firmware
ICS / OT / IoT
simatic net pc
ICS / OT / IoT
OPC Foundation
oss-projectaka opc ua
Local Discovery Server (LDS)On-prem
ICS / OT / IoT / industrial-network
opcfoundation
oss-project
local discover serverMixed
OSS Libraries / generic-library
and 5 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2021-40142?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/pdf/ssa-321292.pdf
cert-portal.siemens.com
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-40142.pdf
files.opcfoundation.org
https://opcfoundation.org/security-bulletins/
opcfoundation.org
and 13 more references View all →

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