The vulnerability of the microprogrammed software for Zyxel NAS326, NAS540, and NAS542 lies in the lack of measures taken to neutralize special elements used in the operating system’s command set. This allows attackers to execute arbitrary code.

The vulnerability of the microprogrammed software for Zyxel NAS326, NAS540, and NAS542 lies in the lack of measures taken to neutralize special elements used in the operating system commands. Exploiting this vulnerability allows a malicious actor to execute arbitrary code by sending a specially...

Zyxel Releases Urgent Security Updates for Critical Vulnerability in NAS Devices

Zyxel has rolled out security updates to address a critical security flaw in its network-attached storage NAS devices that could result in the execution of arbitrary commands on affected systems. Tracked as CVE-2023-27992 CVSS score: 9.8, the issue has been described as a pre-authentication comma...

CVE-2023-27992

The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21AAZF.14C0, NAS540 firmware versions prior to V5.21AATB.11C0, and NAS542 firmware versions prior to V5.21ABAG.11C0 could allow an unauthenticated attacker to execute some operating system OS...

Command injection

The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21AAZF.14C0, NAS540 firmware versions prior to V5.21AATB.11C0, and NAS542 firmware versions prior to V5.21ABAG.11C0 could allow an unauthenticated attacker to execute some operating system OS...

CVE-2023-27992

CVE-2023-27992 affects Zyxel NAS326 (firmware before V5.21(AAZF.14)C0), NAS540 (before V5.21(AATB.11)C0), and NAS542 (before V5.21(ABAG.11)C0). It is a pre-authentication command-injection vulnerability allowing an unauthenticated attacker to remotely execute OS commands via crafted HTTP requests...

CVE-2023-27992

The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21AAZF.14C0, NAS540 firmware versions prior to V5.21AATB.11C0, and NAS542 firmware versions prior to V5.21ABAG.11C0 could allow an unauthenticated attacker to execute some operating system OS...

PT-2023-3171 · Zyxel · Zyxel Nas326 +2

Name of the Vulnerable Software and Affected Versions: Zyxel NAS326 versions prior to V5.21AAZF.14C0 Zyxel NAS540 versions prior to V5.21AATB.11C0 Zyxel NAS542 versions prior to V5.21ABAG.11C0 Description: The pre-authentication command injection issue in Zyxel NAS devices could allow an...

CVE-2023-27992

The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21AAZF.14C0, NAS540 firmware versions prior to V5.21AATB.11C0, and NAS542 firmware versions prior to V5.21ABAG.11C0 could allow an unauthenticated attacker to execute some operating system OS...

The vulnerability of NAS storage systems (Network Attached Storage) such as NAS326, NAS540, and NAS542 lies in the use of uncontrolled format strings, which allow attackers to execute arbitrary code.

The vulnerability of NAS storage systems Network Attached Storage such as NAS326, NAS540, and NAS542 is related to the use of uncontrolled format strings. Exploiting this vulnerability could allow a remote attacker to execute arbitrary code using a specially created UDP packet...

CVE-2020-13364

A backdoor in certain Zyxel products allows remote TELNET access via a CGI script. This affects NAS520 V5.21AASZ.4C0, V5.21AASZ.0C0, V5.11AASZ.3C0, and V5.11AASZ.0C0; NAS542 V5.11ABAG.0C0, V5.20ABAG.1C0, and V5.21ABAG.3C0; NSA325 v2V4.81AALS.0C0 and V4.81AAAJ.1C0; NSA310 4.22AFK.0C0 and...

CVE-2020-13364

CVE-2020-13364 describes a backdoor in certain Zyxel devices that allows remote TELNET access through a CGI script. Affected models include NAS520 (multiple firmware branches), NAS542, NSA325, NSA310, NAS326, NSA310S, NSA320S, NSA221, and NAS540 across various firmware versions listed in the entr...

CVE-2020-13364

A backdoor in certain Zyxel products allows remote TELNET access via a CGI script. This affects NAS520 V5.21AASZ.4C0, V5.21AASZ.0C0, V5.11AASZ.3C0, and V5.11AASZ.0C0; NAS542 V5.11ABAG.0C0, V5.20ABAG.1C0, and V5.21ABAG.3C0; NSA325 v2V4.81AALS.0C0 and V4.81AAAJ.1C0; NSA310 4.22AFK.0C0 and...

CVE-2020-9054

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. ZyXEL NAS devices achieve authentication by using th...