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TI-2017-14297 Aliases CVE-2017-20233GHSA-w392-grj8-mrrf

Hirschmann HiLCOS Layer-2 Firewall Multicast Broadcast Traffic Bypass

Priority LOW 23CWE-284Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

Hirschmann HiLCOS products OpenBAT, BAT450, WLC, BAT867 contains a firewall filtering vulnerability that fails to correctly filter IPv4 multicast and broadcast traffic when management IP address filtering is disabled, allowing configured filter rules to be bypassed. Attackers with network access can inject or observe multicast and broadcast packets that should have been blocked by the firewall.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00214 11th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
BeldenHirschmann HiLCOS OpenBAT, BAT450, WLCup to 9.10.5126-REL; up to 9.12.5500-REL—No fix listedCNA
BeldenHirschmann HiLCOS BAT867up to 9.14.5500-REL; all versions—No fix listedCNA
  • Hirschmann HiLCOS OpenBAT, BAT450, WLC VendorBelden Affected up to 9.10.5126-REL; up to 9.12.5500-REL Fixed in — No fix listed CNA
  • Hirschmann HiLCOS BAT867 VendorBelden Affected up to 9.14.5500-REL; all versions Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-20233
  2. 2026-10-03 Alias added: GHSA-w392-grj8-mrrf

References

Advisory 1

  • TI-2019-09143 Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). CVSS 3.1CRITICAL 9.8
  • TI-2019-09145 Wind River VxWorks 6.6 through 6.9 has a Buffer Overflow in the DHCP client component. CVSS 3.1HIGH 8.8
  • TI-2022-19123 The web server of Hirschmann BAT-C2 before 09.13.01.00R04 allows authenticated command… CVSS 3.1HIGH 8.8
  • TI-2019-09144 Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the IPv4 component. CVSS 3.1CRITICAL 9.8
  • TI-2019-09148 Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 2 of 4). CVSS 3.1CRITICAL 9.8
  • TI-2025-43113 A stored cross-site scripting (XSS) vulnerability exists in the web management interface… CVSS 3.1MEDIUM 6.1
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Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences