CVE-2026-107615

GlavSoft TightVNC Server for Windows versions prior to 2.8.88 is vulnerable to a DLL search order hijacking vulnerability. The DynamicLibrary::init() and ThemeLib components use LoadLibrary() to load screenhooks32.dll or screenhooks64.dll using a bare file name without specifying LOAD_LIBRARY_SEA...

EUVD-2026-94979

An uncontrolled search path element vulnerability in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to execute arbitrary code with SYSTEM privileges. DynamicLibrary::init and ThemeLib load screenhooks32.dll / screenhooks64.dll with LoadLibrary using a bare fi...

CVE-2026-107614

GlavSoft TightVNC Server for Windows versions before 2.8.88 are vulnerable to an integer underflow in the WinCursorShapeUtils::trimTransparent() function. When a cursor shape with a width or height of zero is processed on the DXGI capture path , the loop bound width - 1 wraps to 0xFFFFFFFF. This ...

EUVD-2026-94978

An integer underflow in WinCursorShapeUtils::trimTransparent in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to crash the server, and potentially read out-of-bounds memory, by causing a cursor shape with a width or height of zero to be processed on the DXGI...

CVE-2026-107613

GlavSoft TightVNC Server for Windows versions before 2.8.88 contains a NULL pointer dereference vulnerability in the Win8ScreenDriver component. The issue occurs when the DXGI Desktop Duplication driver fails to re-initialize during the applyNewScreenProperties() function (e.g., following a GPU r...

EUVD-2026-94977

A NULL pointer dereference vulnerability in the Win8ScreenDriver component of GlavSoft TightVNC Server for Windows before 2.8.88 allows an attacker to crash the server, causing a denial of service. When re-initialization of the DXGI Desktop Duplication driver fails in applyNewScreenProperties for...

CVE-2026-107612

GlavSoft TightVNC Server for Windows versions prior to 2.8.88 contains an incorrect permission assignment in its inter-process communication (IPC) mechanism. The software creates a shared memory segment in the *Global* namespace with a NULL DACL , allowing local authenticated users to read or ove...

EUVD-2026-94976

Incorrect permission assignment in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to read or overwrite the inter-process communication handles used between the TightVNC service and its desktop server process. The named shared memory segment in the Global...

PT-2024-5229 · Tightvnc · Tightvnc

Name of the Vulnerable Software and Affected Versions: TightVNC Server for Windows versions prior to 2.8.84 Description: The issue is related to the Control Pipe Handler component of the TightVNC remote desktop access system, which allows attackers to bypass the authentication procedure by using ...