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CVE-2026-3787

HIGH CVSS 4.0: 7.3 EPSS 0.01%
Updated Mar 09, 2026
Parameter Value
CVSS 7.3 (HIGH)
Type CWE-427 (Uncontrolled Search Path Element (Неконтролируемый путь поиска)), CWE-426
Public PoC No

A weakness has been identified in UltraVNC 1.6.4.0 on Windows. This affects an unknown function in the library cryptbase.dll of the component Windows Service. This manipulation causes uncontrolled search path.

The attack requires local access. A high degree of complexity is needed for the attack. The exploitability is reported as difficult.

The vendor was contacted early about this disclosure but did not respond in any way.

Attack Parameters

Attack Vector
Local
Нужен локальный доступ
Attack Complexity
High
Сложно эксплуатировать
Attack Requirements
None
Нет дополнительных условий
Privileges Required
Low
Нужны базовые права
User Interaction
None
Не нужно действие пользователя

Impact Assessment

Confidentiality
High
Полная утечка данных
Integrity
High
Полная модификация данных
Availability
High
Полный отказ в обслуживании

CVSS Vector v4.0