Description
The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zyxel | DX5401-B0 firmware | < V5.17(ABYO.1)C0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
-
Zyxel Unauthenticated LAN Remote Code Execution
exploit/linux/misc/zyxel_multiple_devices_zhttp_lan_rce
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- WID-SEC-2023-1091 Zyxel Firewall Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 27, 2023