CVE-2026-107613: CWE-476 NULL Pointer Dereference in GlavSoft TightVNC
Description
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 example after a GPU reset, display hot-plug or session change), m_drvImpl is left NULL and is subsequently dereferenced without a check by executeDetection(), getScreenBuffer(), grabFb(), getScreenPropertiesChanged() and getCursorPosition().
CVSS v3.1
Score 5.9medium
Affected software
GlavSoft
TightVNC
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- securin
- Date Reserved
- 2026-10-08T13:23:07.677Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac7a2d82cdf04f6561cce98
Added to database: 10/08/2026, 14:04:08 UTC
Last updated: 10/08/2026, 14:04:08 UTC
Views: 1
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