Is CVE-2024-40891 actively exploited?

CVE-2024-40891 has no public evidence of in-the-wild exploitation as of 2025-10-27.

What is the CVSS score for CVE-2024-40891?

CVE-2024-40891 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2024-40891?

Patch guidance is available from zyxel security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2024-40891.

Fix CVE-2024-40891 - HIGH zyxel vmg1312-b10a firmware

Q: Which products are affected by CVE-2024-40891?

14 products: zyxel vmg1312-b10a firmware, zyxel vmg1312-b10b firmware, zyxel vmg1312-b10e firmware, zyxel vmg3312-b10a firmware, zyxel vmg3313-b10a firmware, and 9 more.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-78 · OS Command Injection

Metadata

Primary Vendor: ZYXEL
Published: 2/4/2025
Last Modified: 10/27/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

zyxel : vmg1312-b10a_firmwarezyxel : vmg1312-b10b_firmwarezyxel : vmg1312-b10e_firmwarezyxel : vmg3312-b10a_firmwarezyxel : vmg3313-b10a_firmwarezyxel : vmg3926-b10b_firmwarezyxel : vmg4325-b10a_firmwarezyxel : vmg4380-b10a_firmwarezyxel : vmg8324-b10a_firmwarezyxel : vmg8924-b10a_firmwarezyxel : sbg3300-n000_firmwarezyxel : sbg3300-nb00_firmwarezyxel : sbg3500-n000_firmwarezyxel : sbg3500-nb00_firmware

Remediation Guidance

Executive Summary

View on NIST NVD