What is CVE-2023-48431?

CVE-2023-48431 is a medium-severity vulnerability in Siemens Sinec Ins, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 6.8/10. Published 2023-12-12.

How severe is CVE-2023-48431?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Siemens Sinec Ins

CVE-2023-48431

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).

Published 2023-12-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (48.9th percentile), scored 2026-10-25.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Siemens Sinec Ins — versions All versions < V1.0 SP2 Update 2
Siemens Sinec Ins — versions 1.0

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

cert-portal.siemens.com/productcert/pdf/ssa-077170.pdf (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-48431?: CVE-2023-48431 is a medium-severity vulnerability in Siemens Sinec Ins, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 6.8/10. Published 2023-12-12.
How severe is CVE-2023-48431?: Medium severity. CVSS v3 base score is 6.8 out of 10.