CVE-2026-58146: WNC T-Mobile 5G Box IDU router is vulnerable to OS command injection vulnerability

This month

CRITICAL 9.4

CVE-2026-58146 is a critical-severity flaw (CVSS 9.4) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WNC T-Mobile 5G Box IDU router is vulnerable to OS command injection vulnerability. The vulnerability exists within the /cgi-bin/portal.cgi endpoint, specifically through the cli_cookie POST parameter. The cli_cookie parameter value is directly concatenated into a find command string without proper sanitization. This allows a remote, unauthenticated attacker to inject and execute arbitrary shell commands as root on the underlying operating system

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.4 (Critical)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.9% (top 13%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-09-16
Last modified	2026-09-28

Publisher (CNA): CERT.PL

Last updated 2026-09-28 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-09-16 12:17 UTCPublished CVE record published
2026-09-28 23:10 UTCUpdated Record last modified

Exact fixes by distribution

Fedora 46 · python3.11 · FIXED · 3.11.18-1.fc46 · FEDORA-2026-cc775894f4 · source

sudo dnf upgrade --advisory=FEDORA-2026-cc775894f4

Advisories and coverage

Official advisories

CERT Polska: Vulnerabilities in WNC T-Mobile 5G Box IDU routers 2026-09-16

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-58146?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-58146 being exploited?

CVE-2026-58146 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-58146 affect?

CVE-2026-58146 affects affected software. Severity is critical (CVSS 9.4). WNC T-Mobile 5G Box IDU router is vulnerable to OS command injection vulnerability. The vulnerability exists within the /cgi-bin/portal.cgi endpoint, specifically through the cli_cookie POST parameter. The cli_cookie parameter value is dire

How urgent is CVE-2026-58146?

Priority 55/100. Critical severity

References

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