Siemens RUGGEDCOM CROSSBOW: Authorization bypass exposes administrative credentials
Summary
Siemens RUGGEDCOM CROSSBOW, a secure access management solution for Intelligent Electronic Devices, does not properly restrict access to sensitive configuration items via specific database queries. An authenticated attacker with low privileges can retrieve administrative credentials for various internal systems, enabling unauthorized information disclosure and privilege escalation. The issue is part of advisory SSA-508506, which covers 11 CVEs and is rated CVSS v4.0 8.7 by Siemens.
Affected
- RUGGEDCOM CROSSBOW, all versions below V6.0
Fixed in
- Update to RUGGEDCOM CROSSBOW V6.0 or later, as stated by Siemens.
- Siemens support article: https://support.industry.siemens.com/cs/ww/en/view/110006651/
Workaround
Unknown.
Exploitation
- No evidence of exploitation found in the sources reviewed.
- No public proof of concept found.
- CISA KEV status not confirmed directly; a third-party aggregator lists it as not in KEV.
Our recommendation
- If you operate RUGGEDCOM CROSSBOW, plan the upgrade to V6.0 or later and patch all CVEs of SSA-508506 together.
- Restrict network access to the management interface and review accounts with low privileges.
- Check whether administrative credentials stored on the system need to be rotated after patching.
- If you do not operate this product, no action is needed for this CVE.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Siemens ProductCERT SSA-508506 cert-portal.siemens.com
- CISA ICS Advisory ICSA-26-295-12 www.cisa.gov
- Strix CVE-2026-89199 www.strix.ai
- Vulners Rapid7 CVE-2026-89199 vulners.com
- Threatint CVE-2026-89199 cve.threatint.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 04:33.
Original description (NVD)
A vulnerability has been identified in RUGGEDCOM CROSSBOW (All versions < V6.0). Affected devices do not properly restrict access to sensitive configuration items via specific database queries. This could allow an authenticated attacker to retrieve administrative credentials for various internal systems, leading to unauthorized information disclosure and privilege escalation.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
Affected? We can help.
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