CVE-2025-55182 — Meta React Server Components Remote Code Execution Vulnerability
2025-12-05 • CISA Known Exploited Vulnerability
[event] 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.
> AFFECTED SOFTWARE
| Field | Value |
|---|---|
| Vendor | Meta |
| Product | React Server Components |
| CVE ID | CVE-2025-55182 |
| Date Added | 2025-12-05 |
| Due Date | 2025-12-12 |
| Ransomware Campaign | Known — this vulnerability has been leveraged in ransomware campaigns |
> MITIGATION
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Due Date: 2025-12-12