What is CVE-2023-27309?

CVE-2023-27309 is a medium-severity vulnerability in Siemens Ruggedcom Crossbow, classified under Missing Authorization. CVSS score: 5.0/10. Published 2023-03-14.

How severe is CVE-2023-27309?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Auth bypass in Siemens Ruggedcom Crossbow

CVE-2023-27309

A vulnerability has been identified in RUGGEDCOM CROSSBOW (All versions < V5.2). The client query handler of the affected application fails to check for proper permissions for specific write queries. This could allow an authenticated remote attacker to perform unauthorized actions.

Vulnerability class: Broken Access Control

Published 2023-03-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (38.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Siemens Ruggedcom Crossbow — versions All versions < V5.2
Siemens Ruggedcom Crossbow

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

cert-portal.siemens.com/productcert/pdf/ssa-260625.pdf (Vendor Advisory)

Frequently asked questions

What is CVE-2023-27309?: CVE-2023-27309 is a medium-severity vulnerability in Siemens Ruggedcom Crossbow, classified under Missing Authorization. CVSS score: 5.0/10. Published 2023-03-14.
How severe is CVE-2023-27309?: Medium severity. CVSS v3 base score is 5.0 out of 10.