CVE-2024-40890

**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the CGI...

8.8 HighIn KEV

UNSUPPORTED WHEN ASSIGNED A post-authentication command injection vulnerability in the CGI program 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 by sending a crafted HTTP POST request.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

20.7%Up 20.7 points since Feb 5, 2025

What each source reports

CVE List Score used 8.8

Record: CVE-2024-40890
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

EUVDEUVD-2024-38809 8.8

Record: EUVD-2024-38809
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-r9jg-gp7p-hp34 8.8

**UNSUPPORTED WHEN ASSIGNED** A post-authentication command injection vulnerability in the CGI...

Record: GHSA-r9jg-gp7p-hp34
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

CISA KEV No score

Zyxel DSL CPE OS Command Injection Vulnerability

Multiple Zyxel DSL CPE devices contain a post-authentication command injection vulnerability in the CGI program that could allow an authenticated attacker to execute OS commands via a crafted HTTP request.

Record: CVE-2024-40890
Weakness: CWE-78
Updated: 2026-11-02

NVD 8.8

Record: CVE-2024-40890
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-78
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-40890 is a high vulnerability (CVSS 8.8) in Zyxel Vmg4325-b10a Firmware, published February 4, 2025. CISA lists it as known to be exploited, since February 11, 2025. EUVD reports exploitation since February 11, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 20.7%, the 97th percentile. No source names a fixed version.