December 09, 2025

Security Now 1055: React's Perfect 10

2 hours 45 minutes

A devastating new React vulnerability earned a "perfect 10" for risk, letting attackers remotely run code on a million-plus servers with a single HTTP request. Find out what happened, how fast attackers moved in, and why this bug changes everything for web security.

France's VanityFair face a stiff fine over cookies.

GrapheneOS pulls out of France over coercion worries.

The EU adds to the pile-on over underage social media.

India mandates the tracking of all smartphones.

Apple says no.

India abandons its smartphone tracking mandate.

India requires all encrypted messaging to be SIM-tied.

Scattered Lapsus$ Hunters --becomes--> SLH.

AI demand has driven RAM pricing sky high.

GRC's DNS Benchmark is finished and available.

Cisco may talk a good game, but they're still Cisco.

Browsers to ask users for local network access permission.

React: The worst remote code exploit in a LONG time.

Show Notes - https://www.grc.com/sn/SN-1055-Notes.pdf

Hosts: Steve Gibson and Leo Laporte

Download or subscribe to Security Now at https://twit.tv/shows/security-now.

You can submit a question to Security Now at the GRC Feedback Page.

For 16kbps versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6.

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