Is CVE-2025-0890 actively exploited?

CVE-2025-0890 has no public evidence of in-the-wild exploitation as of 2025-12-15.

What is the CVSS score for CVE-2025-0890?

CVE-2025-0890 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2025-0890?

Patch guidance is available from zyxel security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-0890.

Fix CVE-2025-0890 - CRITICAL zyxel vmg4325-b10a firmware

Q: Which products are affected by CVE-2025-0890?

15 products: zyxel vmg4325-b10a firmware, zyxel sbg3500-n000 firmware, zyxel vmg1312-b10a firmware, zyxel vmg1312-b10b firmware, zyxel vmg1312-b10e firmware, and 10 more.

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 Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-287 · Improper Authentication CWE-522 · Insufficiently Protected Credentials

Metadata

Primary Vendor: ZYXEL
Published: 2/4/2025
Last Modified: 12/15/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

zyxel : vmg4325-b10a_firmwarezyxel : sbg3500-n000_firmwarezyxel : vmg1312-b10a_firmwarezyxel : vmg1312-b10b_firmwarezyxel : vmg1312-b10e_firmwarezyxel : vmg3312-b10a_firmwarezyxel : vmg3313-b10a_firmwarezyxel : vmg3926-b10b_firmwarezyxel : vmg4325-b10a_firmwarezyxel : vmg4380-b10a_firmwarezyxel : vmg8324-b10a_firmwarezyxel : vmg8924-b10a_firmwarezyxel : sbg3300-n000_firmwarezyxel : sbg3300-nb00_firmwarezyxel : sbg3500-nb00_firmware

Remediation Guidance

Executive Summary

View on NIST NVD