CVE-2026-9139: Taiko AG1000-01A SMS Alert Gateway hard-coded credentials in login.zhtml

CVE-2026-9139 · Severity: critical · CVSS 9.8 · Published 2026-05-20

The Taiko AG1000-01A SMS Alert Gateway, a device used for sending automated SMS notifications, contains a critical security flaw in its web management interface. The system's login process is handled insecurely, allowing anyone with network access to view the administrative password directly within the website's source code. An attacker could use these credentials to take full control of the device, potentially disrupting alert services or intercepting communications.

Technologies: Taiko AG1000-01A SMS Alert Gateway. Vendors: Taiko.

Quick answers

Is CVE-2026-9139 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-9139 being exploited in the wild.
How severe is CVE-2026-9139?
Critical severity, with a CVSS score of 9.8, published 20 May 2026.
Which products and versions are affected?
Taiko AG1000-01A SMS Alert Gateway Rev 7.3, Rev 8, UM-AG1000_R7.2.
Is there a fix for CVE-2026-9139?
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-2026-9139 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-9139?
Check whether you run Taiko AG1000-01A SMS Alert Gateway 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 hard-coded credentials vulnerability (CWE-798) exists in the Taiko AG1000-01A SMS Alert Gateway Rev 7.3 and Rev 8. The vulnerability is located in the 'login.zhtml' component, where the authentication logic is implemented entirely in client-side JavaScript. Because the 'validate()' function contains static plaintext credentials, an unauthenticated attacker with network access to the web configuration interface can view the page source to recover administrative credentials. This allows for complete unauthorized administrative access to the device's configuration and functions.

Affected products

  • Taiko AG1000-01A SMS Alert Gateway Rev 7.3, Rev 8, UM-AG1000_R7.2

Timeline

  • 2026-05-20: advisory: Initial disclosure by VulnCheck and NVD publication

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.