CVE-2025-0890

9.8 criticalEPSS 14%Unsupported when assigned

Critical (9.8) in zyxel. No vendor fix: the product was unsupported when the CVE was assigned. EPSS 14% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 14% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
CWEs: CWE-522, CWE-287
Published: 2025-02-04
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

zyxel:sbg3300-n000_firmware
zyxel:sbg3300-nb00_firmware
zyxel:sbg3500-n000_firmware
zyxel:sbg3500-nb00_firmware
zyxel:vmg1312-b10a_firmware
zyxel:vmg1312-b10b_firmware
zyxel:vmg1312-b10e_firmware
zyxel:vmg3312-b10a_firmware
zyxel:vmg3313-b10a_firmware
zyxel:vmg3926-b10b_firmware
zyxel:vmg4325-b10a_firmware
zyxel:vmg4380-b10a_firmware
zyxel:vmg8324-b10a_firmware
zyxel:vmg8924-b10a_firmware

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

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