Invalid access to memory - _mp_mod

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WinSCP 5.17.7

Error message:
Invalid access to memory.

Stack trace:
(00BDA524) _mp_mod
(00F8862A) C5296_3
(00F8A692) ____ExceptionHandler
(00F8744C) __ExceptionHandler
(000861AF) ntdll.dll
(00072B31) ntdll.dll.KiUserExceptionDispatcher
(00BD949A) _monty_new
(00BD00DE) _ecc_montgomery_curve
(00C19088) C2697_0

(00F88C95) C5296_3
(00F8A26F) _ReThrowException
(00D01E8B) TSecureShell::Init
(00D016B9) TSecureShell::Open
(00D898BD) TTerminal::Open
(00CC123F) TTerminalThread::TerminalOpenEvent
(00CBC19C) TSignalThread::Execute
(000BC37B) Userinterface::C20_0
(0001EA27) KERNEL32.DLL.BaseThreadInitThunk
(000665F2) ntdll.dll.RtlGetAppContainerNamedObjectPath
(000665BF) ntdll.dll.RtlGetAppContainerNamedObjectPath

(00F88C95) C5296_3
(00F8A26F) _ReThrowException
(00D01F26) TSecureShell::Init
(00D016B9) TSecureShell::Open
(00D898BD) TTerminal::Open
(00CC123F) TTerminalThread::TerminalOpenEvent
(00CBC19C) TSignalThread::Execute
(000BC37B) Userinterface::C20_0
(0001EA27) KERNEL32.DLL.BaseThreadInitThunk
(000665F2) ntdll.dll.RtlGetAppContainerNamedObjectPath
(000665BF) ntdll.dll.RtlGetAppContainerNamedObjectPath

(00F88C95) C5296_3
(00F8A26F) _ReThrowException
(00D017A7) TSecureShell::Open
(00D898BD) TTerminal::Open
(00CC123F) TTerminalThread::TerminalOpenEvent
(00CBC19C) TSignalThread::Execute
(000BC37B) Userinterface::C20_0
(0001EA27) KERNEL32.DLL.BaseThreadInitThunk
(000665F2) ntdll.dll.RtlGetAppContainerNamedObjectPath
(000665BF) ntdll.dll.RtlGetAppContainerNamedObjectPath

(00F88C95) C5296_3
(00F8A26F) _ReThrowException
(00D89A65) TTerminal::Open
(00CC123F) TTerminalThread::TerminalOpenEvent
(00CBC19C) TSignalThread::Execute
(000BC37B) Userinterface::C20_0
(0001EA27) KERNEL32.DLL.BaseThreadInitThunk
(000665F2) ntdll.dll.RtlGetAppContainerNamedObjectPath
(000665BF) ntdll.dll.RtlGetAppContainerNamedObjectPath

(00F88C95) C5296_3
(00F8A26F) _ReThrowException
(00D8A08E) TTerminal::Open
(00CC123F) TTerminalThread::TerminalOpenEvent
(00CBC19C) TSignalThread::Execute
(000BC37B) Userinterface::C20_0
(0001EA27) KERNEL32.DLL.BaseThreadInitThunk
(000665F2) ntdll.dll.RtlGetAppContainerNamedObjectPath
(000665BF) ntdll.dll.RtlGetAppContainerNamedObjectPath

The problem happens rarely. I cannot reproduce it.