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CRITICAL · 9.8

CVE-2025-0890

**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 t...

Vulnerability 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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
ZyxelVmg4325-B10A Firmware-
ZyxelVmg4325-B10A-
ZyxelSbg3500-N000 Firmware-
ZyxelSbg3500-N000-
ZyxelVmg1312-B10A Firmware-
ZyxelVmg1312-B10A-
ZyxelVmg1312-B10B Firmware-
ZyxelVmg1312-B10B-
ZyxelVmg1312-B10E Firmware-
ZyxelVmg1312-B10E-
ZyxelVmg3312-B10A Firmware-
ZyxelVmg3312-B10A-
ZyxelVmg3313-B10A Firmware-
ZyxelVmg3313-B10A-
ZyxelVmg3926-B10B Firmware-
ZyxelVmg3926-B10B-
ZyxelVmg4380-B10A Firmware-
ZyxelVmg4380-B10A-
ZyxelVmg8324-B10A Firmware-
ZyxelVmg8324-B10A-

Related Weaknesses (CWE)

CWE-287CWE-522

References

FAQ

What is CVE-2025-0890?

CVE-2025-0890 is a vulnerability with a CVSS score of 9.8 (CRITICAL). **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 t...

How severe is CVE-2025-0890?

CVE-2025-0890 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-0890?

Check the references section above for vendor advisories and patch information. Affected products include: Zyxel Vmg4325-B10A Firmware, Zyxel Vmg4325-B10A, Zyxel Sbg3500-N000 Firmware, Zyxel Sbg3500-N000, Zyxel Vmg1312-B10A Firmware.