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 to execute operating system (OS) commands on an affected device.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.009 (58.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (vendor-advisory, Vendor Advisory)
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.