Trend Micro researchers have previously published a blog on what organizations need to know about the actively exploited CVE-2025-55182, which is a critical (CVSS 10.0) pre-authentication remote code execution vulnerability affecting React Server Components (RSC) used in React.js, Next.js, and related frameworks.
RSC is a modern architecture where UI components run on the server instead of the browser, reducing JavaScript sent to clients. RSC communicate between client and server using a serialization protocol called “React Flight.” This protocol enables streaming of complex data structures that mirror the React component tree, allowing UIs to render progressively while awaiting backend responses. The sum of which can be called the RSC payload. Think of it as an RPC-over-HTTP mechanism where clients send “chunks” of serialized data to Server Functions.
Read more…
Source: Trend Micro
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Notable vulnerabilities in Next.js (CVE-2025-29927) and CrushFTP
March 25, 2025
Rapid7 is warning customers of notable vulnerabilities in Next.js, a React framework for building web applications, and CrushFTP, a file transfer technology that has previously been targeted by adversaries. CVE-2025-29927 is a critical improper authorization vulnerability in Next.js middleware that could (theoretically) allow an attacker to bypass authorization checks in a Next.js application, if the authorization ...
- Oracle Cloud says it’s not true someone broke into its login servers and stole data
March 23, 2025
Oracle has straight up denied claims by a miscreant that its public cloud offering has been compromised and information stolen. A crook late last week advertised on an online cyber-crime forum what was alleged to be Oracle Cloud customer security keys and other sensitive data swiped from the IT giant. This material was said to have ...
- Russian zero-day seller is offering up to $4 million for Telegram exploits
March 21, 2025
Operation Zero, a company that acquires and sells zero-days exclusively to the Russian government and local Russian companies, announced on Thursday that it’s looking for exploits for the popular messaging app Telegram, and is willing to offer up to $4 million for them. The exploit broker is offering up to $500,000 for a “one-click” remote code ...
- Critical Veeam Backup & Replication CVE-2025-23120
March 19, 2025
On Wednesday, March 19, 2025, backup and recovery software provider Veeam published a security advisory for a critical remote code execution vulnerability tracked as CVE-2025-23120. The vulnerability affects Backup & Replication systems that are domain joined. Veeam explicitly mentions that domain-joined backup servers are against security and compliance best practices, but in reality, we believe this ...
- ZDI-CAN-25373: Windows shortcut exploit abused as Zero-Day in widespread APT campaigns
March 18, 2025
The Trend Zero Day Initiative threat hunting team identified significant instances of the exploitation of ZDI-CAN-25373 across a variety of campaigns dating back to 2017. The researchers analysis revealed that 11 state-sponsored groups from North Korea, Iran, Russia, and China have employed ZDI-CAN-25373 in operations primarily motivated by cyber espionage and data theft. Trend Micro discovered ...
- Critical Security Incident involving GitHub Action tj-action/changed-files
March 17, 2025
A critical security incident involving the tj-actions/changed-files GitHub Action has been reported. The changed-files action, which allows GitHub repositories to track file changes, has been tampered with to allow the exposure through GitHub Actions build logs of CI/CD secrets, including passwords, tokens, API keys, PII and other sensitive data that have been embedded within software code. ...