CVE-2023-48427

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-12-12 · updated 2026-06-17
Weakness: CWE-295

Description

A vulnerability has been identified in SINEC INS (All versions < V1.0 SP2 Update 2). Affected products do not properly validate the certificate of the configured UMC server. This could allow an attacker to intercept credentials that are sent to the UMC server as well as to manipulate responses, potentially allowing an attacker to escalate privileges.

Affected products

Siemens SINEC INS: before 1.0; 1.0, 1.0-sp1, 1.0-sp2, 1.0-sp2_update_1 — fixed in 1.0

How to fix

Upgrade to a fixed version: Siemens SINEC INS 1.0. Check the vendor advisory for mitigations.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-077170.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-077170.pdf

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