EXPOSURES › CVE-2023-28771
CVE-2023-28771
HIGH ⌖ ON CISA KEV · EXPLOITEDZyxel firewalls allow remote command execution via crafted packets.
Zyxel firewalls, including ATP, USG FLEX, VPN, and ZyWALL/USG models, allow remote command execution by sending crafted packets. This vulnerability, actively exploited, poses a significant risk to DIB/CMMC compliance and should be patched immediately.
Shame score — High-severity vulnerability actively exploited, indicating negligence and a lack of adequate security measures.
▸ RECOMMENDED ACTION Actively exploited (CISA KEV) — remediate now, ahead of your normal patch cycle.
Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device.