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Vulnerabilities

Vulnerability · 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)…

Published Feb 24, 2026 · catalog updated Jun 17, 2026 · vmg3625-t50c firmware

Check if you run it

No confirmed exploitation is on record for CVE-2026-1459. EPSS is 0.92%. Act only if a listed version of vmg3625-t50c firmware is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.92%
Remediation
Advisory link
Affected products
cpe zyxel/dx5401-b1 firmware · cpe zyxel/emg3525-t50b firmware · cpe zyxel/emg5523-t50b firmware · cpe zyxel/vmg3625-t50b firmware · cpe zyxel/vmg3625-t50c firmware · cpe zyxel/vmg8623-t50b firmware

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe zyxel/dx5401-b1 firmwareversion unspecified
  • cpe zyxel/emg3525-t50b firmwareversion unspecified
  • cpe zyxel/emg5523-t50b firmwareversion unspecified
  • cpe zyxel/vmg3625-t50b firmwareversion unspecified
  • cpe zyxel/vmg3625-t50c firmwareversion unspecified
  • cpe zyxel/vmg8623-t50b firmwareversion unspecified

How to fix CVE-2026-1459

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-1459. EPSS is 0.92%. Act only if a listed version of vmg3625-t50c firmware is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-78: OS Command Injection. EPSS 0.92%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 24, 2026 · NIST NVD

    Detected

    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.

  2. Jun 17, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-1459

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-1459

    30-day exploitation probability 0.9%

    first.org
  • NIST NVDVulnerability recordCVE-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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.