ACTIVELY EXPLOITED
CVE-2023-27992: Zyxel Multiple NAS Devices Command Injection Vulnerability
| Vendor | Zyxel |
|---|---|
| Product | Multiple Network-Attached Storage (NAS) Devices |
| Actively exploited | Yes |
| Added to CISA KEV | 23 Jun 2023 |
| CISA federal deadline | 14 Jul 2023 |
| Weakness (CWE) | CWE-78 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
Multiple Zyxel network-attached storage (NAS) devices contain a pre-authentication command injection vulnerability that could allow an unauthenticated attacker to execute commands remotely via a crafted HTTP request.
SOURCES
Other Zyxel flaws
- CVE-2026-7273: Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Vulnerability
- CVE-2024-40891: Zyxel DSL CPE OS Command Injection Vulnerability
- CVE-2024-40890: Zyxel DSL CPE OS Command Injection Vulnerability
- CVE-2024-11667: Zyxel Multiple Firewalls Path Traversal Vulnerability
- CVE-2017-6884: Zyxel EMG2926 Routers Command Injection Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.