CVE-2025-55182 · netVigilance record NV25-0229
Meta React Server Components Remote Code Execution
past due ransomware
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA deadline 2025-12-12 · passed 8 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Meta React Server Components contains a remote code execution vulnerability that could allow unauthenticated remote code execution by exploiting a flaw in how React decodes payloads sent to React Server Function endpoints. Please note CVE-2025-66478 has been rejected, but it is associated with CVE-2025- 55182.
Who is affected
Meta React Server Components. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 8 months ago
Sources
- NVD entry for CVE-2025-55182 nvd.nist.gov/vuln/detail/CVE-2025-55182
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- react.dev react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
- github.com github.com/vercel-labs/fix-react2shell-next?tab=readme-ov-file
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2025-55182