CVE-2025-0890

CRITICAL
Published Feb 4, 2025 Modified Dec 15, 2025 CWE-287 CWE-522

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.

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CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-287 Improper Authentication
CWE-522 CWE-522

Affected Products

Vendor Product
zyxel vmg4325-b10a_firmware
zyxel vmg4325-b10a
zyxel sbg3500-n000_firmware
zyxel sbg3500-n000
zyxel vmg1312-b10a_firmware
zyxel vmg1312-b10a
zyxel vmg1312-b10b_firmware
zyxel vmg1312-b10b
zyxel vmg1312-b10e_firmware
zyxel vmg1312-b10e
zyxel vmg3312-b10a_firmware
zyxel vmg3312-b10a
zyxel vmg3313-b10a_firmware
zyxel vmg3313-b10a
zyxel vmg3926-b10b_firmware
zyxel vmg3926-b10b
zyxel vmg4325-b10a_firmware
zyxel vmg4325-b10a
zyxel vmg4380-b10a_firmware
zyxel vmg4380-b10a
zyxel vmg8324-b10a_firmware
zyxel vmg8324-b10a
zyxel vmg8924-b10a_firmware
zyxel vmg8924-b10a
zyxel sbg3300-n000_firmware
zyxel sbg3300-n000
zyxel sbg3300-nb00_firmware
zyxel sbg3300-nb00
zyxel sbg3500-nb00_firmware
zyxel sbg3500-nb00

References

Frequently Asked Questions

What is 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 to the management interface if the administrators have the option to change the default credentials but fail to do so. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2025-0890? +
CVE-2025-0890 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2025-0890? +
CVE-2025-0890 affects products from zyxel, specifically: sbg3300-n000, sbg3300-n000_firmware, sbg3300-nb00, sbg3300-nb00_firmware, sbg3500-n000, sbg3500-n000_firmware, sbg3500-nb00, sbg3500-nb00_firmware, vmg1312-b10a, vmg1312-b10a_firmware, vmg1312-b10b, vmg1312-b10b_firmware, vmg1312-b10e, vmg1312-b10e_firmware, vmg3312-b10a, vmg3312-b10a_firmware, vmg3313-b10a, vmg3313-b10a_firmware, vmg3926-b10b, vmg3926-b10b_firmware, vmg4325-b10a, vmg4325-b10a_firmware, vmg4380-b10a, vmg4380-b10a_firmware, vmg8324-b10a, vmg8324-b10a_firmware, vmg8924-b10a, vmg8924-b10a_firmware. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-0890? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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