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Soon59Medium5.9VulnerabilityCVE-2026-107613No patch link observed

CVE-2026-107613 — A NULL pointer dereference vulnerability in the Win8ScreenDriver component of GlavSoft TightVNC Server for Windows before 2.8.88 allows an attacker…

Published Oct 8, 2026, 02:16 PM UTCIngested 13h agoSource NVD(cve-db)CVE-2026-107613

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 base metrics

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
5.9

Medium severity

Band computed from the CVSS base score, not the source's own label — so it means the same thing across every feed.

AV

Network

Attack Vector

AC

High

Attack Complexity

PR

None

Privileges Required

UI

None

User Interaction

S

Unchanged

Scope

C

None

Confidentiality

I

None

Integrity

A

High

Availability

References

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