Description
**UNSUPPORTED WHEN ASSIGNED**
Insecure default credentials for the Telnet function in the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an attacker to log in to the management interface if the administrators have the option to change the default credentials but fail to do so.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zyxel | VMG4325-B10A firmware | <= 1.00(AAFR.4)C0_20170615 | — |
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.
GitHub 2 repositories
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krevetkqqq/CVE-2025-0890 ★ 0 · Oct 30, 2026
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Danyw24/zyxel-p870hn-hardware-hacking ★ 0 · Aug 13, 2026
From a bare PCB to root: hardware-hacking a ZyXEL P-870HN (BCM6368) over UART — CVE-2025-0890 + CVE-2024-40891, on my own hardware.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.