CVE-2025-12539
CVE-2025-12539 is a critical-severity vulnerability with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-922.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- EPSS exploit prediction: 1% (57th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-84363
- Weakness: CWE-922
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2025-12539?
- 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.
- How severe is CVE-2025-12539?
- CVE-2025-12539 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-12539 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-12539?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-12539 have an EU (EUVD) identifier?
- Yes. CVE-2025-12539 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-84363.
- When was CVE-2025-12539 published?
- CVE-2025-12539 was published on 2025-11-11 and last updated on 2026-06-17.
References
- https://github.com/The-Network-Crew/TNC-Toolbox-for-WordPress/commit/31bb3040b22c84e2d6dfd3210fe0ad045ff4ddf6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2eaa5a5c-c11f-40d0-be69-c3ec8029a819?source=cve
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