What is CVE-2025-13942?

CVE-2025-13942 is a critical-severity vulnerability in Zyxel Dx4510-b0, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-02-24.

How severe is CVE-2025-13942?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Zyxel Dx4510-b0

CVE-2025-13942

A command injection vulnerability in the UPnP function of the Zyxel EX3510-B0 firmware versions through 5.17(ABUP.15.1)C0 could allow a remote attacker to execute operating system (OS) commands on an affected device by sending specially cr…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.011 (60.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Zyxel Dx4510-b0
Zyxel Dx4510-b0_firmware
Zyxel Dx4510-b1
Zyxel Dx4510-b1_firmware
Zyxel Ee6510-10
Zyxel Ee6510-10_firmware
Zyxel Emg6726-b10a
Zyxel Emg6726-b10a_firmware
Zyxel Ex2210-t0
Zyxel Ex2210-t0_firmware

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security@zyxel.com.tw (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2025-13942?: CVE-2025-13942 is a critical-severity vulnerability in Zyxel Dx4510-b0, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-02-24.
How severe is CVE-2025-13942?: Critical severity. CVSS v3 base score is 9.8 out of 10.