Is CVE-2026-36741 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-36741 being exploited in the wild.

How severe is CVE-2026-36741?

High severity, with a CVSS score of 7.2, published 13 May 2026.

Which products and versions are affected?

U-SPEED AC1200 Gigabit Wi-Fi Router (T18-21K) V1.0.

Is there a fix for CVE-2026-36741?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-36741 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-36741?

Check whether you run U-SPEED AC1200 Gigabit Wi-Fi Router (T18-21K), U-SPEED T18-21k or U-SPEED T18-21k Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-36741: U-SPEED AC1200 Router command injection in NTP configuration

CVE-2026-36741 · Severity: high · CVSS 7.2 · Published 2026-05-13

The U-SPEED AC1200 Gigabit Wi-Fi Router is a networking device used to provide internet connectivity. A security flaw in its time synchronization settings allows an authorized administrator to run unauthorized system commands. This could lead to a complete takeover of the device, allowing an attacker to monitor network traffic, steal credentials, or disrupt internet service.

Vendors: U-SPEED.

Quick answers

Is CVE-2026-36741 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-36741 being exploited in the wild.
How severe is CVE-2026-36741?: High severity, with a CVSS score of 7.2, published 13 May 2026.
Which products and versions are affected?: U-SPEED AC1200 Gigabit Wi-Fi Router (T18-21K) V1.0.
Is there a fix for CVE-2026-36741?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-36741 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-36741?: Check whether you run U-SPEED AC1200 Gigabit Wi-Fi Router (T18-21K), U-SPEED T18-21k or U-SPEED T18-21k Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A command injection vulnerability exists in the /api/system/ntp endpoint of the U-SPEED AC1200 (T18-21K) router firmware V1.0. The application fails to properly sanitize user-supplied input in the 'ntpSrv1' parameter before passing it to a system shell. An authenticated attacker with administrative privileges can use shell metacharacters (e.g., '&') to execute arbitrary operating system commands as root. This can be used to access sensitive files like /etc/passwd or establish persistence. No official patch is currently noted in the advisory, though remediation should involve input validation and avoiding shell execution functions.

Affected products

U-SPEED AC1200 Gigabit Wi-Fi Router (T18-21K) V1.0

Timeline

2026-05-13: disclosed
2026-05-13: advisory

References

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