Is CVE-2026-9139 actively exploited?

No active exploitation of CVE-2026-9139 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-9139 be exploited remotely?

Yes. CVE-2026-9139 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-9139?

CVE-2026-9139 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-9139

CWE-798Published: May 20, 2026· Updated: May 21, 2026

9.8

CVSS v3.1

EPSS:0.13%probability of exploitation in 30 daysPercentile:32.0th

Official Description

Taiko AG1000-01A SMS Alert Gateway Rev 7.3 and Rev 8 contains a hard-coded credential vulnerability in the embedded web configuration interface where authentication is implemented entirely in client-side JavaScript in login.zhtml, exposing static plaintext credentials in the page source. Unauthenticated attackers with network access can recover administrative credentials directly from the client-side validate() function to obtain full administrative access to the device.

NVD Source

Technical Analysis

CVE-2026-9139 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.