CVE-2026-90847 EFM ipTIME C200E System Setup iux_set.cgi os command injection

Critical 9.4 Published Updated

Remote attackers can execute arbitrary OS commands on EFM ipTIME C200E routers via the System Setup interface.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-90847?

CVE-2026-90847 is a critical command injection vulnerability in EFM ipTIME C200E, published on 15 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A vulnerability was determined in EFM ipTIME C200E 1.094. The impacted element is an unknown function of the file iux_set.cgi of the component System Setup. This manipulation causes os command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.

Weakness: CWE-78, CWE-77

Which versions are affected by CVE-2026-90847?

How do I fix CVE-2026-90847?

No fix has been published for CVE-2026-90847 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-90847 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90847 exists.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-7cwj-49q5-wgwg.

Is CVE-2026-90847 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free