Analysis of Hydroph0bia (CVE-2025-4275) SecureBoot Bypass Fix for Insyde H2O UEFI Firmware
By
transpute
A baker's-dozen of insight crammed into one ring.
Summary
This article analyzes the fix for Hydroph0bia (CVE-2025-4275), a SecureBoot bypass vulnerability affecting UEFI-compatible firmware based on Insyde H2O. The author examines how Insyde addressed the vulnerability and whether their fixes can be bypassed. The analysis reveals that only Dell has successfully delivered BIOS updates with fixes 10 days after the embargo ended, highlighting challenges in patch distribution across the supply chain. The article provides technical details about the vulnerability's impact and the effectiveness of the implemented security measures.
Key quotes
· 3 pulledThis post is likely the final one about a vulnerability I dubbed Hydroph0bia (as a pun on Insyde H2O) aka CVE-2025-4275 or INSYDE-SA-2025002.
It is always interesting to see how a vulnerability with a massive supply chain impact gets fixed by different OEMs, and how fast they could distribute the fix across their fleets.
There been 10 days since the embargo end, and so far the only OEM who successfully delivered BIOS updates with fixes for Hydroph0bia is Dell.
Article URL: https://coderush.me/hydroph0bia-part3/
Comments URL: https://news.ycombinator.com/item?id=47172730
Points: 4
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