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Cato CTRL™ Threat Brief: “React2Shell” Vulnerability Targeting React Server Components

Cato Networks
Cato Networks
Published December 9, 2025Original Report

Excerpt

Executive Summary On Wednesday, December 3, a critical remote code execution (RCE) vulnerability in React Server Components (RSC), dubbed React2Shell (CVE-2025-55182), was disclosed . The CVE was discovered by security researcher Lachlan Davidson. It quickly gained traction with multiple third-party proof of concepts (PoCs) being published of varying quality and credibility. This grace period, during which an official PoC was not available, was a gift for defenders. As a…

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Indicators of Compromise

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1 indicators

TypeIndicatorConfidenceScoreFirst Seen
CVECVE-2025-55182HighScore 82/100First seen

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