AUGUST 4, 2026
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Case File

CVE-2017-20233

MEDIUM · CVSS 5.4 EPSS 0.20%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-04-03 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.4. See the original NVD description below for full technical details.

CVE
CVE-2017-20233
Severity
MEDIUM
CVSS
5.4
EPSS
0.20%

Original NVD Description

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.