A crucial vulnerability affecting Meta React Server Elements has been added to the Recognized Exploited Vulnerabilities catalog, signalling widespread energetic exploitation by CISA.
Tracked as CVE-2025-55182, this distant code execution vulnerability poses a direct risk to organizations that depend on React Server Elements.
The vulnerability stems from a major flaw in how React Server Elements decode payloads despatched to React Server Perform endpoints.
Attackers can exploit this weak point to attain unauthenticated distant code execution. Probably compromising affected programs with out requiring authentication or consumer interplay.
This attribute makes the vulnerability notably harmful and simpler for risk actors to weaponize throughout various community environments.
CISA assigned a crucial severity score to this vulnerability, emphasizing its potential for widespread influence.
The company added CVE-2025-55182 to its KEV catalog on December 5, 2025, establishing a compulsory remediation deadline of December 26, 2025, for federal companies and important infrastructure operators.
This 21-day window displays the pressing nature of the risk and the company’s evaluation of energetic exploitation exercise.
Organizations utilizing Meta React Server Elements should prioritize rapid remediation efforts.
CISA recommends making use of the vendor-provided mitigations or following the relevant BOD 22-01 steering for cloud providers.
For organizations unable to implement patches or mitigations, discontinuing use of the affected product could also be mandatory to take care of a safety posture.
Safety researchers haven’t documented confirmed connections between this vulnerability and ransomware campaigns.
Although the crucial nature and energetic exploitation standing recommend heightened threat regardless.
Organizations ought to monitor risk intelligence feeds and safety advisories for developments on this entrance.
This addition to CISA’s KEV catalog underscores the crucial significance of vulnerability administration applications and speedy patch deployment cycles.
As risk actors actively exploit CVE-2025-55182, the window for defensive motion narrows significantly.
Organizations ought to instantly assess their infrastructure for affected React Server Elements (RSC) deployments and take motion earlier than the December 26 deadline.
Safety groups are urged to evaluate their present React implementations and take a look at compatibility with obtainable patches in managed environments.
Develop deployment plans to attenuate operational disruption whereas making certain complete protection throughout all affected programs.
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