Overview
CVE-2025-66542 is a unique case in the world of Common Vulnerabilities and Exposures (CVEs). Unlike typical CVEs that identify specific security flaws in software or hardware, CVE-2025-66542 is explicitly marked as “Rejected reason: Not used”. This means that the CVE ID was initially assigned but was subsequently determined to be invalid, irrelevant, or otherwise not applicable to a real-world vulnerability. This article will delve into the implications of a “Not used” CVE and explain why it doesn’t warrant any immediate action.
Technical Details
According to the official CVE entry, CVE-2025-66542 was published on 2025-12-05T04:16:00.993 and its description states “Rejected reason: Not used.” This rejection indicates that the initial assessment or information regarding a potential vulnerability was found to be inaccurate or misleading. It’s important to understand that the rejection can occur for various reasons, including:
- The reported issue was not a security vulnerability.
- The reported issue was a duplicate of an existing CVE.
- The reported issue was not reproducible or verifiable.
- The reporter withdrew the claim.
Because the CVE is explicitly marked as “Not used,” no further technical analysis or investigation is necessary.
CVSS Analysis
Since CVE-2025-66542 is a rejected entry, it has no associated CVSS (Common Vulnerability Scoring System) score. The severity is listed as “N/A”, reflecting the fact that there’s no vulnerability to assess.
Possible Impact
Given that CVE-2025-66542 is marked as “Not used,” there is no potential impact. It does not represent a security risk to any system or application.
Mitigation or Patch Steps
No mitigation or patching is required for CVE-2025-66542. Since the CVE has been rejected, it does not represent a vulnerability that needs to be addressed.
References
- CVE.org – The official CVE website.
- National Vulnerability Database (NVD) – U.S. government repository of standards based vulnerability management data.
