# CVE-2026-89202: Siemens RUGGEDCOM CROSSBOW authorization bypass in session disconnection

Source: https://junglewise.ai/threats/cve-2026-89202-a-vulnerability-has-been-identified-in-ruggedcom-crossbow-all  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-89202 · Severity: medium · CVSS 6.5 · Published 2026-10-13

RUGGEDCOM CROSSBOW is a secure access management system that controls who can connect to critical industrial devices. An authenticated attacker with minimal privileges can forcibly disconnect other users' sessions, including those of administrators, causing service disruption and potential outages of critical infrastructure access.

Technologies: [Siemens RUGGEDCOM CROSSBOW](https://junglewise.ai/threats/technologies/ruggedcom-crossbow). Vendors: [Siemens](https://junglewise.ai/threats/vendors/siemens).

## Quick answers

**Is CVE-2026-89202 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-89202 being exploited in the wild.

**How severe is CVE-2026-89202?** Medium severity, with a CVSS score of 6.5, published 13 October 2026.

**Which products and versions are affected?** Siemens RUGGEDCOM CROSSBOW All versions < V6.0.

**Is there a fix for CVE-2026-89202?** Yes: fixed in V6.0 or later. Until then: Restrict network access to RUGGEDCOM CROSSBOW devices using firewall rules or network segmentation according to Siemens' operational guidelines for Industrial Security to limit exposure to untrusted users. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-89202 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-89202?** Check whether you run Siemens RUGGEDCOM CROSSBOW at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in V6.0 or later

Restrict network access to RUGGEDCOM CROSSBOW devices using firewall rules or network segmentation according to Siemens' operational guidelines for Industrial Security to limit exposure to untrusted users.

## Technical details

The device fails to properly validate authorization when processing disconnection requests, allowing an authenticated user to terminate sessions belonging to other users without sufficient privilege checks. An attacker with any valid credentials can exploit this over the network to deny service by disconnecting administrator or operator sessions. The vulnerability requires prior authentication but no special configuration.

## Affected products

- Siemens RUGGEDCOM CROSSBOW All versions < V6.0

## Timeline

- 2026-10-13: disclosed

## References

- [https://cert-portal.siemens.com/productcert/html/ssa-508506.html](https://cert-portal.siemens.com/productcert/html/ssa-508506.html)

## Related threats

- [Siemens RUGGEDCOM CROSSBOW authorization bypass in scheduled actions](https://junglewise.ai/threats/cve-2026-89206-a-vulnerability-has-been-identified-in-ruggedcom-crossbow-all)
- [Siemens RUGGEDCOM CROSSBOW authorization bypass and SQL injection](https://junglewise.ai/threats/cve-2026-89205-a-vulnerability-has-been-identified-in-ruggedcom-crossbow-all)
- [Siemens RUGGEDCOM CROSSBOW SQL injection in database queries](https://junglewise.ai/threats/cve-2026-89204-a-vulnerability-has-been-identified-in-ruggedcom-crossbow-all)
- [Siemens RUGGEDCOM CROSSBOW privilege escalation and SQL injection](https://junglewise.ai/threats/cve-2026-89203-a-vulnerability-has-been-identified-in-ruggedcom-crossbow-all)
- [Siemens RUGGEDCOM CROSSBOW SQL injection in Bulk Export](https://junglewise.ai/threats/cve-2026-89201-a-vulnerability-has-been-identified-in-ruggedcom-crossbow-all)