CVE-2025-66478
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
The CVE record was rejected and has no description. Use the identifier named in the rejection reason above.
How it can be exploited
Public exploit evidence (Exploit Observer)
Also known as: EUVD-2025-200984, GHSA-9qr9-h5gf-34mp
VEDAS cluster: VEDAS:ARCHERACCURACY
Exploit Observer links 73 pieces of public exploit code or detection modules that name this CVE or one of its aliases.
Exploit code and modules (73)
Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.
- Code repository: https://github.com/abhirajranjan/cve-2025-66478
- Code repository: https://github.com/abtonc/next-cve-2025-66478
- Code repository: https://github.com/aiexz/cve-2025-66478-kinda-waf
- Code repository: https://github.com/arashiyans/cve-2025-55182-cve-2025-66478
- Code repository: https://github.com/bankkroll/quickcheck-cve-2025-55182-react-and-cve-2025-66478-next.js
- Code repository: https://github.com/changgun-lee/next.js-rsc-rce-scanner-cve-2025-66478
- Code repository: https://github.com/code42cate/nexts-cve-2025-66478-exploit
- Code repository: https://github.com/daviongowie/-vercel-application-is-vulnerable-to-cve-2025-66478.
- Code repository: https://github.com/daviongowie/-vercel-prod.yml-application-is-vulnerable-to-cve-2025-66478.
- Code repository: https://github.com/exptechtw/cve-2025-66478
- Code repository: https://github.com/imbas007/poc-cve-2025-66478
- Code repository: https://github.com/jibaru/cve-2025-66478-github-patcher
- and 61 more
Research and write-ups (5)
- Research or write-up: https://danielkliewer.com/blog/2025-12-04-critical-nextjs-rce-cve-2025-66478-security-guide
- Research or write-up: https://nextjs.org/blog/CVE-2025-66478
- Research or write-up: https://nextjs.org/blog/CVE-2025-66478?inf_ver=2&inf_ctx=IVTX89S3vSFB7pTTKYY5VZWKA0kYQ1ALfVbBnLvT6TZVm5JUlgt8bFWLn-lfs6ahtQCa0vxfS7xJfDQpFEJ8_lbY-Eht_MBWv89i5miagMx3alcnMKC4rbDdiURLD3dQpJOwgi76s2Tsjosba3VDXriVIhhPdwuUiHQqyCeo5vWJV89s_E72ZTNmkHMIOxtyHRZpPEYJc4f3lEIOA06-IK7BpnGaTxFhooAWRDkcq9ozy9FbeZNJfbGaNi4Ni1PzOhllY0Bo4F8QKlgdwWQzP8zhqFDIiE40aohOVb5GjKBrdy12tuzbdB1D_kkW8gPLwsikQcAwIfGlXszX8KVLXg%3D%3D
- Research or write-up: https://slcyber.io/research-center/high-fidelity-detection-mechanism-for-rsc-next-js-rce-cve-2025-55182-cve-2025-66478
- Research or write-up: https://wazuh.com/blog/detecting-next-js-cve-2025-66478-rce-vulnerability-with-wazuh
Vulnerability databases and vendor advisories (5)
Catalogue entries, not exploit evidence.
- Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2025-200984
- Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-9qr9-h5gf-34mp
- Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-66478
- Vulnerability database or vendor advisory: https://osv.dev/vulnerability/GHSA-9qr9-h5gf-34mp
- Vulnerability database or vendor advisory: https://www.tenable.com/cve/CVE-2025-66478
1156 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.
VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.
Live scores
- EPSS
- 0.000
low predicted chance of attack - VEDAS
- 0.955
strong exploit evidence - On CISA KEV
- Not listed
- Detection rule
- None yet
Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish.
Who is affected
The CVE record does not list affected products yet.
How to fix it
No fixed version or vendor advisory is listed in the CVE record yet. Watch the vendor’s security page.
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
Advisories on this CVE
- React2Shell (CVE-2025-55182): the React Server Components RCE, and why the December patch is not enough now (full advisory)
- React2Shell: React Server Components RCE (CVE-2025-55182; Next.js duplicate CVE-2025-66478) (3 Dec 2025)
References
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.