what is cve-2026-25262-sm8450-research fr?

This repository documents an experimental security research project studying whether a known vulnerability, CVE-2026-25262, also applies to a newer Qualcomm chip, the Snapdragon 8 Gen 1, known internally as SM8450. The vulnerability lives in the Sahara protocol, a low level communication method Qualcomm chips use during firmware loading, and it was originally acknowledged only on older chip generations. The testing was done on a POCO F4 GT phone. The README reports the vulnerability does let an attacker write arbitrary data into a chip memory area called SRAM during this early handshake stage, bypassing a signature check that is supposed to prevent unauthorized firmware from loading, confirming the flaw exists on this newer chip too. Through static analysis of a loader file, the researcher located a specific memory address that appears to control an internal authentication flag, and reports that writing a particular value to that address using a custom tool changes how the loader responds, with a certain authentication error message no longer appearing afterward. Despite that partial progress, the README is clear that full access has not yet been achieved. Commands that should return detailed device information instead come back empty, which the author interprets as the loader still being incompletely initialized. Two ideas are being explored to get further: loading a raw, stripped down version of the firmware image, and investigating whether a separate secure processing area of the chip needs to be involved for full storage access. The repository includes written articles, evidence logs, and analysis notes in both English and Russian, but the README states plainly that no ready made exploit tool is included. The author frames the project as responsible disclosure for educational and research purposes, intended to let others verify and study the findings rather than to enable attacks, and says the repository will keep being updated as the research continues.