Vulnerability · Published Feb 4, 2025 · Assigned by Zyxel
CVE-2025-0890
Critical 9.8
In plain English
A critical-severity improper authentication in VMG4325-B10A firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 14.4% (higher than 97% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)14.4%top 3.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | VMG4325-B10A firmware | <= 1.00(AAFR.4)C0_20170615 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H