VulnerabilityModified

CVE-2021-42027

A vulnerability has been identified in SINUMERIK Edge (All versions < V3.2).

HIGH 7.4EPSS 0.48%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.48%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1: 7.4 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS: 0.48% probability · 40th percentile
CISA KEV: Not listed
Weakness: CWE-295
Affected: siemens/sinumerik edge
Source: productcert@siemens.com

References

https://cert-portal.siemens.com/productcert/pdf/ssa-523250.pdfPatch, Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-523250.pdfPatch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.