CVE-2025-66478: CVE-2025-66478: Rejected reason: This CVE is a duplicate of CVE-2025-55182.
Unknown · · NVD published 2025-12-04 · posted 2025-12-03 · last modified 2025-12-04
What it is
Rejected reason: This CVE is a duplicate of CVE-2025-55182.
| Weakness | Not specified |
|---|---|
| ATT&CK tactics | n/a |
Exploitation evidence
First exploit evidence seen: 2025-12-03 (earliest date across the sources below).
Exploited in the wild
No source on this site lists in-the-wild exploitation yet (CISA KEV, VulnCheck KEV).
Public exploit code
Metasploit
exploit/multi/http/react2shell_unauth_rce_cve_2025_55182: Unauthenticated RCE in React Server Components (React2Shell) (disclosure 2025-12-03)
GitHub proof-of-concept repositories
25 public repositories from 24 accounts, first seen 2025-12-03. Most starred: Malayke/Next.js-RSC-RCE-Scanner-CVE-2025-66478 (428 stars), view repository.
Verify before running: public PoCs can be malicious. Read the code and only run it in an isolated lab. A PoC means exploit code is public, not that this CVE is exploited in the wild.
Sources: Rapid7 Metasploit Framework module metadata · nomi-sec/PoC-in-GitHub.
No ATT&CK techniques could be mapped or inferred for this CVE yet.
How to fix it
Fixed versions
NVD does not list a fixed version for this CVE. Use the vendor advisory below.
Derived from the NVD CPE configuration (versionEndExcluding / versionEndIncluding). Always confirm with the vendor advisory.
Vendor advisories and patches
No vendor-tagged reference yet; see the full reference list.
Detection Generic guidance
Response checklist Generic guidance
- Inventory: find every instance of the affected product and version (include internet-facing and forgotten ones).
- Patch or mitigate per the vendor advisory; if you cannot patch, remove internet exposure or apply the vendor workaround.
- Assume compromise if the system was exposed before patching: hunt for the indicators in the advisory and review logs back to the disclosure date.
- Rotate credentials and secrets stored on or used by the affected system if compromise cannot be ruled out.