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CVE-2025-55182: Meta React Server Components Remote Code Execution Vulnerability
Meta React Server Components · in CISA KEV since 2025-12-05
2025-12-05added to KEV
2025-12-12federal remediation due date
99.80%EPSS exploit probability (30 days) 100.0th percentile
10 CRITICALCVSS 3.1
Knownknown ransomware use
2days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-502 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVD published | 2025-12-03 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2025-55182.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.