CVE-2021-42027

HIGH 7.4CVE-2021-42027 · Published 14/12/2021 · updated 17/06/2026

In short

CVE-2021-42027 is a HIGH (CVSS 7.4) vulnerability affecting sinumerik edge (siemens).
Chance of exploitation in the next 30 days (EPSS): 0.50%, higher than 42.5% of all vulnerabilities.
Fix: update to 3.2 or later.

Package	Affected versions	Patched versions
sinumerik edge siemens	`< 3.2`	`3.2`

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.

References

cert-portal.siemens.com/productcert/pdf/ssa-523250.pdf · Patch

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