CRITICAL CISA KEV

CVE-2025-55182

CVSS v3

CRITICAL

EPSS Score

99.8 %

exploit probability, as of 2026-10-03

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints.

CISA Known Exploited Vulnerability

Date Added: 2025-12-05
Patch Due Date: 2025-12-12
Ransomware Use: Known

Technical details

Published: 2025-12-03
CERT-FR Advisory: CERTFR-2025-ALE-014
Exploit-DB: EDB-52506
CERT-FR Link: CERTFR-2025-ALE-014

Frequently asked questions

What is CVE-2025-55182?

Is CVE-2025-55182 actively exploited?

Yes. CVE-2025-55182 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-12-12.

What is the CVSS score for CVE-2025-55182?

CVE-2025-55182 has a CVSS v3 base score of 10 (CRITICAL severity).

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