CVE-2017-20233 (GCVE-0-2017-20233)

Vulnerability from cvelistv5 – Published: 2026-04-03 22:47 – Updated: 2026-04-03 22:47
VLAI?
Title
Hirschmann HiLCOS Layer-2 Firewall Multicast Broadcast Traffic Bypass
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.
Severity ?
5.4 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
5.9 (Medium)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-284 - Improper access control
Assigner
References
Impacted products
Vendor Product Version
Belden Hirschmann HiLCOS OpenBAT, BAT450, WLC Affected: 0 , ≤ 9.10.5126-REL (semver)
Affected: 0 , ≤ 9.12.5500-REL (semver)
Unaffected: 0 (semver)
Create a notification for this product.
    Belden Hirschmann HiLCOS BAT867 Affected: 0 , ≤ 9.14.5500-REL (semver)
Affected: 0 (semver)
Create a notification for this product.
Date Public ?
2017-05-08 00:00
Show details on NVD website
To clipboard 

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        }
      ],
      "metrics": [
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            "subConfidentialityImpact": "NONE",
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            "valueDensity": "NOT_DEFINED",
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            "version": "4.0",
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      "providerMetadata": {
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        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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          "url": "https://assets.belden.com/m/11a07596f0bf1018/original/Security-Bulletin-IPv4-Multicast-HiLCOS-Layer-2-Firewall-BSECV-2017-03.pdf"
        },
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        }
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      "source": {
        "discovery": "EXTERNAL"
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      "title": "Hirschmann HiLCOS Layer-2 Firewall Multicast Broadcast Traffic Bypass"
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    "dateReserved": "2026-04-03T17:40:03.508Z",
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    "state": "PUBLISHED"
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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