CVE-2023-48431

Severity: high (CVSS 8.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% 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-754

Description

A vulnerability has been identified in SINEC INS (All versions < V1.0 SP2 Update 2). Affected software does not correctly validate the response received by an UMC server. An attacker can use this to crash the affected software by providing and configuring a malicious UMC server or by manipulating the traffic from a legitimate UMC server (i.e. leveraging CVE-2023-48427).

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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