What is CVE-2024-40890?

CVE-2024-40890 is a high-severity vulnerability in Zyxel Vmg4325-b10a Firmware, classified under OS Command Injection. CVSS score: 8.8/10. Published 2025-02-04.

How severe is CVE-2024-40890?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2024-40890 known to be exploited?

Yes. CVE-2024-40890 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-02-11), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.

RCE in Zyxel Vmg4325-b10a Firmware

CVE-2024-40890

**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 opera…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.459 (97.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Zyxel Vmg4325-b10a Firmware — versions <= 1.00(AAFR.4)C0_20170615

Weakness classification (CWE)

CWE-78 — OS Command Injection

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2025-02-11. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2025-03-04.

Required 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.

Public proof-of-concept exploits

References

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (vendor-advisory)

Frequently asked questions

What is CVE-2024-40890?: CVE-2024-40890 is a high-severity vulnerability in Zyxel Vmg4325-b10a Firmware, classified under OS Command Injection. CVSS score: 8.8/10. Published 2025-02-04.
How severe is CVE-2024-40890?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2024-40890 known to be exploited?: Yes. CVE-2024-40890 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-02-11), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.