RCE in Zyxel Dx5401-b1

CVE-2026-1459

A post-authentication command injection vulnerability in the TR-369 certificate download CGI program of the Zyxel VMG3625-T50B firmware versions through 5.50(ABPM.9.7)C0 could allow an authenticated attacker with administrator privileges t…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.009 (55.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-1459?
CVE-2026-1459 is a high-severity vulnerability in Zyxel Dx5401-b1, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-02-24.
How severe is CVE-2026-1459?
High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2026-1459 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.