{"id":"CVE-2026-107613","published":"2026-10-08T14:16:50.020","lastModified":"2026-10-08T21:10:00.133","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().","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-476"],"vendors":[],"products":[],"references":[{"url":"https://sourceforge.net/p/vnc-tight/bugs/1660/","tags":[]},{"url":"https://www.tightvnc.com/whatsnew.php","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}