Remote Code Execution Vulnerability in React and Next.js Frameworks: December 2025
On December 3, 2025, the React team released a security advisory regarding a vulnerability, CVE-2025-55182, in the React server that could allow an unauthenticated, remote attacker to perform remote code execution on an affected device or system. For a description of this vulnerability, see the public React Security Advisory ["https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components"]. Cisco's standard practice is to update integrated third-party software components to later versions as they become available.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-55182US | —OT critical | KEV | ||
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-serve… | ||||
references
External citations — patches, advisories, analysis.
- Security Vulnerability Policyexternal
- public React Security Advisoryexternal
- Remote Code Execution Vulnerability in React and Next.js Frameworks: December 2025self
- Cisco Security Vulnerability Policyexternal
- considering software upgradesexternal
- Cisco Support and Downloadsexternal
- Cisco Technical Assistance Center (TAC)external
- the advisoriesexternal
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