CVE-2025-12539

CRITICAL 10.0CVE-2025-12539 · Published 11/11/2025 · updated 18/10/2026

In short

CVE-2025-12539 is a CRITICAL (CVSS 10.0) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 65.8% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

The TNC Toolbox: Web Performance plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.4.2. This is due to the plugin storing cPanel API credentials (hostname, username, and API key) in files within the web-accessible wp-content directory without adequate protection in the "Tnc_Wp_Toolbox_Settings::save_settings" function. This makes it possible for unauthenticated attackers to retrieve these credentials and use them to interact with the cPanel API, which can lead to arbitrary file uploads, remote code execution, and full compromise of the hosting environment.

References

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