VulnerabilityAnalyzed

CVE-2023-49621

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7).

CRITICAL 9.8EPSS 0.60%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). 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 SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application uses default credential with admin privileges. An attacker could use the credentials to gain complete control of the affected device.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.60% probability · 47th percentile
CISA KEV: Not listed
Weakness: CWE-1392
Affected: siemens/simatic cn 4100 firmware
Source: productcert@siemens.com

References

https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdfPatch, Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdfPatch, Vendor Advisory

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