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CVE-2021-42027

HIGH
7.4
CVSS Score
Published: December 14, 2021 at 12:06 PM UTC
Updated: June 17, 2026 at 04:09 AM UTC
1 product affected across 1 vendorSINUMERIK Edge

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Severity
HIGH7.4
Exploit prediction
EPSS 0.5%

Description

A vulnerability has been identified in SINUMERIK Edge (All versions < V3.2). The affected software does not properly validate the server certificate when initiating a TLS connection. This could allow an attacker to spoof a trusted entity by interfering in the communication path between the client and the intended server.

Affected

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

SINUMERIK Edge· Siemens
95%
v < 3.2All versions < V3.2
Affected range stops below 3.2, 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 (1)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-523250.pdf

CVSS

7.4HIGH[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-295

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