VULNERABILITY INTELLIGENCE
CVE-2017-20233
CVSS score5.9 MEDIUM
EPSS probability0.20%
CISA KEVNot currently listed
Published2026-04-03
Last modified2026-07-21
CVSS vectorCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
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.
Weakness classification
- CWE-284: Improper Access Control