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CVE-2023-28831

Published: Sep 12, 2023Updated: Aug 18, 2025 Sources: CVE List NVD BDU csafCWE-190
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.8%
Top 47.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

The OPC UA implementations (ANSI C and C++) in affected products contain an integer overflow vulnerability that could cause the application to run into an infinite loop during certificate validation. This could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.

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-190

Affected Products

simatic cloud connect 7 cc712 firmwaresiemens
On-prem
Enterprise Software / collaboration-groupware
simatic cloud connect 7 cc716 firmwaresiemens
On-prem
Enterprise Software / collaboration-groupware
simatic drive controller cpu 1504d tf firmwaresiemens
On-prem
Enterprise Software / collaboration-groupware
simatic drive controller cpu 1507d tf firmwaresiemens
On-prem
Enterprise Software / collaboration-groupware
simatic et 200sp open controller cpu firmwaresiemens
On-prem
Enterprise Software / collaboration-groupware
siemenscommercialDEEnterprise Softwareaka siemens ag
and 251 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
Workaround Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/html/ssa-118850.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-711309.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-118850.pdf
cert-portal.siemens.com
and 10 more references View all →

Timeline

Published
Sep 12, 2023
Last Updated
Aug 18, 2025

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