A critical heap buffer overflow vulnerability has been disclosed in 7-Zip version 26.00, enabling attackers to achieve arbitrary code execution via a vtable hijack by exploiting a defect in the tool’s NTFS archive handler. Tracked as CVE-2026-48095 and assigned advisory GHSL-2026-140, the flaw resides in the CInStream::GetCuSize() function inside NtfsHandler.cpp. The function computes the NTFS […]
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