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.

Published: 2025-02-04 Last update: 2025-12-15 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-0890 is rated High Risk (70.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 21.67%, 96th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-0890

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-08 23.79% 21.67% -2.12%
2 2026-03-15 1.23% 23.79% +22.55%
3 2025-12-16 — 1.23% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-0890

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2025-0890

Affected software / configurations for CVE-2025-0890

Vendor Product Version Raw CPE
zyxel vmg4325-b10a_firmware — cpe:2.3:o:zyxel:vmg4325-b10a_firmware:-:*:*:*:*:*:*:*
zyxel sbg3500-n000_firmware — cpe:2.3:o:zyxel:sbg3500-n000_firmware:-:*:*:*:*:*:*:*
zyxel vmg1312-b10a_firmware — cpe:2.3:o:zyxel:vmg1312-b10a_firmware:-:*:*:*:*:*:*:*
zyxel vmg1312-b10b_firmware — cpe:2.3:o:zyxel:vmg1312-b10b_firmware:-:*:*:*:*:*:*:*
zyxel vmg1312-b10e_firmware — cpe:2.3:o:zyxel:vmg1312-b10e_firmware:-:*:*:*:*:*:*:*
zyxel vmg3312-b10a_firmware — cpe:2.3:o:zyxel:vmg3312-b10a_firmware:-:*:*:*:*:*:*:*
zyxel vmg3313-b10a_firmware — cpe:2.3:o:zyxel:vmg3313-b10a_firmware:-:*:*:*:*:*:*:*
zyxel vmg3926-b10b_firmware — cpe:2.3:o:zyxel:vmg3926-b10b_firmware:-:*:*:*:*:*:*:*
zyxel vmg4380-b10a_firmware — cpe:2.3:o:zyxel:vmg4380-b10a_firmware:-:*:*:*:*:*:*:*
zyxel vmg8324-b10a_firmware — cpe:2.3:o:zyxel:vmg8324-b10a_firmware:-:*:*:*:*:*:*:*
zyxel vmg8924-b10a_firmware — cpe:2.3:o:zyxel:vmg8924-b10a_firmware:-:*:*:*:*:*:*:*
zyxel sbg3300-n000_firmware — cpe:2.3:o:zyxel:sbg3300-n000_firmware:-:*:*:*:*:*:*:*
zyxel sbg3300-nb00_firmware — cpe:2.3:o:zyxel:sbg3300-nb00_firmware:-:*:*:*:*:*:*:*
zyxel sbg3500-nb00_firmware — cpe:2.3:o:zyxel:sbg3500-nb00_firmware:-:*:*:*:*:*:*:*

References for CVE-2025-0890

cvelogic Threat Intelligence