CVE-2024-40891

**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.

Affected

Zyxel · VMG4325-B10A firmware

CVSS v3.1 ZYXEL

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

EPSS

21.70% chance of exploitation in the next 30 days, 98th percentile

CISA KEV

added 2025-02-11

Published

2025-02-04

Updated

2025-10-21

Proof-of-concept exploits (1)

• Danyw24/zyxel-p870hn-hardware-hacking0★ · 2026-08-13

Security advisories

• https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-c…

References

• CVE Record
• NVD entry

Related

• CVE-2004-1561
• CVE-2016-5195
• CVE-2023-45866
• CVE-2024-21306
• CVE-2025-0890
• CVE-2025-68143