Vulnerabilities > Zyxel > Nas540 Firmware > Critical
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2023-06-19 | CVE-2023-27992 | OS Command Injection vulnerability in Zyxel Nas326 Firmware, Nas540 Firmware and Nas542 Firmware The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request. | 9.8 |
| 2020-08-06 | CVE-2020-13364 | Unspecified vulnerability in Zyxel products A backdoor in certain Zyxel products allows remote TELNET access via a CGI script. | 9.0 |
| 2020-08-06 | CVE-2020-13365 | Improper Authentication vulnerability in Zyxel products Certain Zyxel products have a locally accessible binary that allows a non-root user to generate a password for an undocumented user account that can be used for a TELNET session as root. | 9.0 |
| 2020-03-04 | CVE-2020-9054 | OS Command Injection vulnerability in Zyxel products Multiple ZyXEL network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device. | 10.0 |