CVE-2024-40891 | BDVDB-2026-265267 Detail

ZyxelVMG4325-B10A firmware

Description#

**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the management commands of the legacy DSL CPE Zyxel VMG4325-B10A firmware version 1.00(AAFR.4)C0_20170615 could allow an authenticated attacker to execute operating system (OS) commands on an affected device via Telnet.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References#

Exploit#

No public exploit known

History#

Version 12025-02-04Record published in the CVE List.
Version 22025-10-21Most recent update recorded in the CVE List.

Published

Published: 2025-02-04
Last modified: 2025-10-21

Vendor information

Vendor: Zyxel
Product: VMG4325-B10A firmware

All Zyxel vulnerabilities

Score

8.8 High

EPSS

22.8%, Moderate

Estimated chance of exploitation in the next 30 days. EPSS percentile: 97.8.

KEV

Yes

Listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Command Injection

Action

The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.

Affected Systems

Vulnerable
<= 1.00(AAFR.4)C0_20170615
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.8 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).