What is CVE-2026-7256?

CVE-2026-7256 is a high-severity vulnerability in Zyxel Wre6505, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-05-12.

How severe is CVE-2026-7256?

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

RCE in Zyxel Wre6505

CVE-2026-7256

** UNSUPPORTED WHEN ASSIGNED ** A command injection vulnerability in the CGI program of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to execute operating system (OS) commands on a vulnerable…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.014 (80.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Zyxel Wre6505 — versions v2
Zyxel Wre6505_firmware — versions v1.00\(abdv.3\)c0
Zyxel Wre6505 V2 Firmware — versions V1.00(ABDV.3)C0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security@zyxel.com.tw (Product)

Frequently asked questions

What is CVE-2026-7256?: CVE-2026-7256 is a high-severity vulnerability in Zyxel Wre6505, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-05-12.
How severe is CVE-2026-7256?: High severity. CVSS v3 base score is 8.8 out of 10.