CVE-2025-55423

A command injection vulnerability exists in the upnp_relay() function in multiple ipTIME router models because the controlURL value used to pass…

Critical · published January 20, 2026

CVSS v3.1
9.8
EPSS
4%
Percentile
89.8
In the wild
Unconfirmed
What it is

🚨 A sneaky command injection vulnerability lurks in the upnp_relay() function of several ipTIME router models! One misconfigured controlURL can spell disaster! 🔥 Think of it like a delivery service that accepts any package without checking who sent it. The delivery drivers are following orders to 'drop it off at the given address' without peeking inside, leading to potentially dangerous packages being delivered right to your network! An attacker could exploit this flaw to execute arbitrary operating system commands on your router, which is absolutely devastating. This means they could take control of the router, manipulate settings, and open up your entire network to further attacks. The ramifications could be catastrophic, affecting not just the router but the devices connected to it!

Put simply

Think of it like a delivery service that accepts any package without checking who sent it. The delivery drivers are following orders to 'drop it off at the given address' without peeking inside, leading to potentially dangerous packages being delivered right to your network! This command injection vulnerability enables attackers to pass unsanitized controlURL values to the system() function in ipTIME routers, allowing the execution of arbitrary commands on the underlying operating system. This means an attacker could run any command they desire, potentially compromising the device and the network it manages.

What to do

An attacker could exploit this flaw to execute arbitrary operating system commands on your router, which is absolutely devastating. This means they could take control of the router, manipulate settings, and open up your entire network to further attacks. The ramifications could be catastrophic, affecting not just the router but the devices connected to it! Immediately update your ipTIME router firmware to the latest version provided by the manufacturer. Additionally, review your router's configuration and restrict access to the controlURL to trusted sources only, ensuring that validation and sanitization are properly implemented. Don't wait – secure your network now! You've got this! By taking these steps, you’re well on your way to bolstering your network's defenses! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.03736 · 89.8th percentile
Published
2026-01-20T00:00Z
EPSS history
Timeline
  • 20 JAN 00:00Z
    A command injection vulnerability exists in the upnp_relay() function in multiple ipTIME router models because the controlURL value used to pass…
    cvelistv5