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.

Classification

CVE ID: CVE-2025-0890

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.8

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor: Zyxel

Product: VMG4325-B10A firmware

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.09% (probability of being exploited)

EPSS Percentile: 41.19% (scored less or equal to compared to others)

EPSS Date: 2025-03-05 (when was this score calculated)

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-insecure-default-credentials-vulnerabilities-in-certain-legacy-dsl-cpe-02-04-2025

Timeline