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:
- Wormable Apple iCloud Bug Allows Automatic Photo Theft
October 9, 2020
A group of ethical hackers cracked open Apple’s infrastructure and systems and, over the course of three months, discovered 55 vulnerabilities, a number of which would have given attackers complete control over customer and employee applications. Of note, a critical, wormable iCloud account takeover bug would allow attackers to automatically steal all of a victim’s documents, ...
- ZeroLogon: Ransomware gang now using critical Windows flaw in attacks
October 9, 2020
Microsoft is warning that cybercriminals have started to incorporate exploit code for the ZeroLogon vulnerability in their attacks. The alert comes after the company noticed ongoing attacks from cyber-espionage group MuddyWater (SeedWorm) in the second half of September. This time, the threat actor is TA505, an adversary who is indiscriminate about the victims it attacks, with ...
- Palo Alto Networks Unit 42 Discovers 27 New Vulnerabilities Across Microsoft Products
October 2, 2020
Palo Alto Networks Unit 42 threat researchers have been credited with discovering 27 new vulnerabilities addressed by the Microsoft Security Response Center (MSRC), as part of its last nine months of security update releases. Vulnerabilities The Microsoft vulnerabilities discovered included 27 vulnerabilities rated “important,” including Remote Code Execution, Privilege Elevation, Information Disclosure and one Denial of Service ...
- Zerologon Attacks Against Microsoft DCs Snowball in a Week
September 29, 2020
A spike in exploitation attempts against the Microsoft vulnerability CVE-2020-1472, known as the Zerologon bug, continues to plague businesses. That’s according to researchers from Cisco Talos, who warned that cybercriminals are redoubling their efforts to trigger the elevation-of-privilege bug in the Netlogon Remote Protocol, which was addressed in the August Microsoft Patch Tuesday report. Microsoft announced ...
- Why Web Browser Padlocks Shouldn’t Be Trusted
September 29, 2020
For years, Apple, Firefox, Google and Microsoft relentlessly made the point that in order to avoid rogue sites you must make sure your browser “padlock” is either locked, green or is otherwise indicating a site as being “secure.” Now, cybersecurity firms are stressing that those padlocks are not enough. “You must look beyond the lock,” said ...
- Update now: Cisco warns over 25 high-impact flaws in its IOS and IOS XE software
September 25, 2020
Cisco has alerted customers using its IOS and ISO XE networking gear software to apply updates for 34 flaws across 25 high-severity security advisories. The large number of flaws affecting ISO and ISO XE are due to the advisories being announced as part of Cisco’s semi-annual release for the widely used software for Cisco routers and ...