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TI-2025-00756 Aliases CVE-2025-0890GHSA-q2vf-jq2x-689c

Improper authentication in Zyxel VMG4325-B10A firmware

Priority MEDIUM 64CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass, Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287 and CWE-522.

Summary

**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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.14379 96th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ZyxelVMG4325-B10A firmwareup to 1.00(AAFR.4)C0_20170615—No fix listedCNA
  • VMG4325-B10A firmware VendorZyxel Affected up to 1.00(AAFR.4)C0_20170615 Fixed in — No fix listed CNA

CPE configurations NVD · 28

CPEVersionsRoleVendor
cpe:2.3:o:zyxel:vmg4325-b10a_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:vmg4325-b10a:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:sbg3500-n000_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:sbg3500-n000:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:vmg1312-b10a_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:vmg1312-b10a:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:vmg1312-b10b_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:vmg1312-b10b:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:vmg1312-b10e_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:vmg1312-b10e:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
  • cpe:2.3:o:zyxel:vmg4325-b10a_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:vmg4325-b10a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:sbg3500-n000_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:sbg3500-n000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:vmg1312-b10a_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:vmg1312-b10a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:vmg1312-b10b_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:vmg1312-b10b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:vmg1312-b10e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:vmg1312-b10e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
Show 18 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:zyxel:vmg3312-b10a_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:vmg3312-b10a:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:vmg3313-b10a_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:vmg3313-b10a:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:vmg3926-b10b_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:vmg3926-b10b:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:vmg4380-b10a_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:vmg4380-b10a:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:vmg8324-b10a_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:vmg8324-b10a:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:vmg8924-b10a_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:vmg8924-b10a:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:sbg3300-n000_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:sbg3300-n000:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:sbg3300-nb00_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:sbg3300-nb00:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
cpe:2.3:o:zyxel:sbg3500-nb00_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableZyxel
cpe:2.3:h:zyxel:sbg3500-nb00:-:*:*:*:*:*:*:*not specified by NVDRunning onZyxel
  • cpe:2.3:o:zyxel:vmg3312-b10a_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:vmg3312-b10a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:vmg3313-b10a_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:vmg3313-b10a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:vmg3926-b10b_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:vmg3926-b10b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:vmg4380-b10a_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:vmg4380-b10a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:vmg8324-b10a_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:vmg8324-b10a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:vmg8924-b10a_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:vmg8924-b10a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:sbg3300-n000_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:sbg3300-n000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:sbg3300-nb00_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:sbg3300-nb00:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel
  • cpe:2.3:o:zyxel:sbg3500-nb00_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Zyxel
  • cpe:2.3:h:zyxel:sbg3500-nb00:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Zyxel

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Zyxel VMG4325-B10A firmware — zyxel.com/global/en/support/security-advisories/zyxel-secur…

    3 records Highest priority Priority CRITICAL 2 CRITICAL, 1 MEDIUM

    Other records, highest priority first

    • TI-2024-27256 OS command injection in Zyxel VMG4325-B10A firmwarePriority CRITICAL 97
    • TI-2024-27255 OS command injection in Zyxel VMG4325-B10A firmwarePriority CRITICAL 97
    Show all 3 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-0890
  2. 2026-10-03 Alias added: GHSA-q2vf-jq2x-689c

References

Advisory 1

  • TI-2024-27256 OS command injection in Zyxel VMG4325-B10A firmware KEVCVSS 3.1HIGH 8.8
  • TI-2024-27255 OS command injection in Zyxel VMG4325-B10A firmware KEVCVSS 3.1HIGH 8.8
  • TI-2015-06028 ZyXEL NWA1100-N, NWA1100-NH, NWA1121-NI, NWA1123-AC, and NWA1123-NI access points… CVSS 3.0MEDIUM 5.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences