Auth bypass in Siemens Ruggedcom Crossbow

CVE-2026-89202

A vulnerability has been identified in RUGGEDCOM CROSSBOW (All versions < V6.0). Affected devices do not properly perform authorization checks for device disconnection requests. This could allow an authenticated attacker with minimal privileges to disconnect active sessions of other users, including administrators, leading to a denial of service.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-89202?
CVE-2026-89202 is a medium-severity vulnerability in Siemens Ruggedcom Crossbow, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-10-13.
How severe is CVE-2026-89202?
Medium severity. CVSS v3 base score is 6.5 out of 10.