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Product · Microsoft

SymCrypt

1 known vulnerabilities.

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  • Medium 6.1
    CVE-2026-35199

    SymCrypt SymCryptXmssSign function - Heap overflow via 64->32-bit leaf-count truncation

    SymCrypt is the core cryptographic function library currently used by Windows. From 103.5.0 to before 103.11.0, The SymCryptXmssSign function passes a 64-bit leaf count value to a helper function that accepts a 32-bit parameter. For XMSS^MT parameter sets wit…

    Microsoft SymCrypt