Is CVE-2025-12539 in the CISA KEV catalog?

No. CVE-2025-12539 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-12539?

CVE-2025-12539 has a CVSS v3 base score of 10.0 (CRITICAL).

What is the EPSS score for CVE-2025-12539?

CVE-2025-12539 has an EPSS score of 1.04% (60th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2025-12539?

No published fix for CVE-2025-12539 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2025-12539

CRITICAL

10.0

CVSS v3

NVD

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.

CWE-922

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploit Intelligence

1.04%probability of exploitation in 30 days

60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-922 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13937	Medium	5.3	78%	-	-
CVE-2018-25031	Medium	4.3	42%	-	Fix
CVE-2021-27170	Critical	9.8	16%	-	-
CVE-2023-41723	Medium	4.3	12%	-	-
CVE-2020-1493	Medium	5.5	7.3%	-	-
CVE-2024-30896	Critical	9.1	5.2%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-12.