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CVE-2021-1699 is an information disclosure vulnerability in the Windows modem.sys driver. The vulnerability allows an attacker to gain access to sensitive information that should not be accessible, due to improper handling of data within the modem.sys component.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a proof-of-concept (POC) exploit for CVE-2021-1699, an information disclosure vulnerability in the Windows kernel modem driver (modem.sys). The main code is implemented in C++ and consists of a Visual Studio project with the primary logic in 'Modem_InfoDisclosure.cpp'. The exploit works by enumerating modem devices on the system, constructing a symbolic link path (\\GLOBAL??\\<ModemName>), opening the symbolic link, and querying its target. The result is dumped in hex format, potentially exposing sensitive information from the kernel. The code is a local POC and does not provide remote exploitation or privilege escalation. The repository is well-structured, with supporting files for building the project and a README referencing the targeted CVE. The main entry point is 'Modem_InfoDisclosure.cpp', and the exploit is intended for research and demonstration purposes.
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