vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2023-27334

Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability

HIGH
7.5
CVSS Score
Published: May 3, 2024 at 01:55 AM UTC
Updated: June 17, 2026 at 05:44 AM UTC
4 products affected across 1 vendorSecure Integration ServeredgeAggregatorOpc Ua C++ Software Development Kit

Using edgeConnector Siemens by Softing?

Get instant alerts when new vulnerabilities affect edgeConnector Siemens - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Softing edgeConnector Siemens. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of OPC UA ConditionRefresh requests. By sending a large number of requests, an attacker can consume all available resources on the server. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20498.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

edgeAggregator· Softing
95%
v < 3.70
Affected range stops below 3.70, so it looks safe — our inference, not a vendor statement
edgeConnector· Softing
95%
v < 3.703.40
Affected range stops below 3.70, so it looks safe — our inference, not a vendor statement
Opc Ua C++ Software Development Kit· Softing
95%
v < 6.20.1
Affected range stops below 6.20.1, so it looks safe — our inference, not a vendor statement
Secure Integration Server· Softing
95%
v < 1.30
Affected range stops below 1.30, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: [email protected]
https://industrial.softing.com/fileadmin/psirt/downloads/syt-2023-1.html
x_research-advisoryThird Party Advisory
Source: [email protected]
https://www.zerodayinitiative.com/advisories/ZDI-23-1054/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHzdi
Vector?

Quick Info

StatusANALYZED
CWE
CWE-400NVD-CWE-noinfo

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card