What is CVE-2025-8693?

CVE-2025-8693 is a high-severity vulnerability in Zyxel Ax7501-b0, classified under OS Command Injection. CVSS score: 8.8/10. Published 2025-11-18.

How severe is CVE-2025-8693?

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

RCE in Zyxel Ax7501-b0

CVE-2025-8693

A post-authentication command injection vulnerability in the "priv" parameter of Zyxel DX3300-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could allow an authenticated attacker to execute operating system (OS) commands on an affected d…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.011 (61.6th 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 Ax7501-b0
Zyxel Ax7501-b0_firmware
Zyxel Ax7501-b1
Zyxel Ax7501-b1_firmware
Zyxel Dm4200-b0
Zyxel Dm4200-b0_firmware
Zyxel Dx3300-t0
Zyxel Dx3300-t0 Firmware — versions <= 5.50(ABVY.6.3)C0
Zyxel Dx3300-t0_firmware
Zyxel Dx3300-t1

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

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

Frequently asked questions

What is CVE-2025-8693?: CVE-2025-8693 is a high-severity vulnerability in Zyxel Ax7501-b0, classified under OS Command Injection. CVSS score: 8.8/10. Published 2025-11-18.
How severe is CVE-2025-8693?: High severity. CVSS v3 base score is 8.8 out of 10.