A AegiFlow
UNKNOWNKNOWN EXPLOITED

CVE-2023-28771

Zyxel Multiple Firewalls OS Command Injection Vulnerability

Published
2023-05-31
Modified
2026-07-31
Sources
cisa-kev

Summary

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.

References

Includes data from the CISA Known Exploited Vulnerabilities catalog.

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