How severe is CVE-2025-66108?

CVE-2025-66108 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-66108 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-66108?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-66108 have an EU (EUVD) identifier?

Yes. CVE-2025-66108 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198446.

When was CVE-2025-66108 published?

CVE-2025-66108 was published on 2025-11-21 and last updated on 2026-06-17.

CVE-2025-66108

CVE-2025-66108 is a medium-severity vulnerability with a CVSS 3.x base score of 4.3. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198446
Weakness: CWE-862
Published: 2025-11-21
Last modified: 2026-06-17

Description

Missing Authorization vulnerability in Merlot Digital (by TNC) TNC Toolbox: Web Performance tnc-toolbox allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects TNC Toolbox: Web Performance: from n/a through <= 2.0.4.

Frequently asked questions

What is CVE-2025-66108?: Missing Authorization vulnerability in Merlot Digital (by TNC) TNC Toolbox: Web Performance tnc-toolbox allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects TNC Toolbox: Web Performance: from n/a through <= 2.0.4.
How severe is CVE-2025-66108?: CVE-2025-66108 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-66108 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-66108?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-66108 have an EU (EUVD) identifier?: Yes. CVE-2025-66108 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198446.
When was CVE-2025-66108 published?: CVE-2025-66108 was published on 2025-11-21 and last updated on 2026-06-17.

References

https://patchstack.com/database/Wordpress/Plugin/tnc-toolbox/vulnerability/wordpress-tnc-toolbox-web-performance-plugin-2-0-4-broken-access-control-vulnerability?_s_id=cve

Other CWE-862 (Missing Authorization) vulnerabilities

CVE-2026-0092 — Critical (CVSS 10.0): In Package Manager, there is a possible device lock controller bypass due to a missing permission check. This could…
CVE-2026-33712 — Critical (CVSS 10.0): Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST…
CVE-2026-2031 — Critical (CVSS 10.0): An Improper Access Control vulnerability in several internal API endpoints for Google Cloud Application Integration…
CVE-2026-34976 — Critical (CVSS 10.0): Dgraph is an open source distributed GraphQL database. Prior to 25.3.1, the restoreTenant admin mutation is missing…
CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.

Browse all CWE-862 (Missing Authorization) vulnerabilities →