Vulnerability · Published Oct 13, 2026 · Assigned by siemens

CVE-2026-89202

Medium 6.5

In plain English

A medium-severity authorization bypass via user-controlled key in RUGGEDCOM CROSSBOW from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 87.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Siemens	RUGGEDCOM CROSSBOW	0 – before V6.0

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

https://cert-portal.siemens.com/productcert/html/ssa-508506.html