What is CVE-2023-37373?

CVE-2023-37373 is a medium-severity vulnerability in Siemens Ruggedcom Crossbow, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2023-08-08.

How severe is CVE-2023-37373?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Siemens Ruggedcom Crossbow

CVE-2023-37373

A vulnerability has been identified in RUGGEDCOM CROSSBOW (All versions < V5.4). The affected applications accept unauthenticated file write messages. An unauthenticated remote attacker could write arbitrary files to the affected application's file system.

Vulnerability class: Broken Authentication

Published 2023-08-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.3th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.3% 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 < V5.4
Siemens Ruggedcom Crossbow

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

cert-portal.siemens.com/productcert/pdf/ssa-472630.pdf (Vendor Advisory)

Frequently asked questions

What is CVE-2023-37373?: CVE-2023-37373 is a medium-severity vulnerability in Siemens Ruggedcom Crossbow, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2023-08-08.
How severe is CVE-2023-37373?: Medium severity. CVSS v3 base score is 5.3 out of 10.