CVEvulnerability

CVE-2026-3787

6.4 MEDIUM Published 2026-03-08 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-03-08
Last modified
2026-06-17
Assigner
[email protected]
CVSS 4.0 ([email protected])
6.4 MEDIUM — CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.0 MEDIUM — AV:L/AC:H/Au:S/C:C/I:C/A:C
Weaknesses
CWE-426, CWE-427

Description

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.

Affected configurations

• uvnc ultravnc 1.6.4.0

Related

Weakness · CWE (2)

  • CWE-426 Untrusted Search Path weakness
  • CWE-427 Uncontrolled Search Path Element weakness

References