DiscoverTotal Leo (Audio)Security Now 1055: React's Perfect 10
Security Now 1055: React's Perfect 10

Security Now 1055: React's Perfect 10

Update: 2025-12-09
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Description

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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Security Now 1055: React's Perfect 10

Security Now 1055: React's Perfect 10

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