← Back to CVEs

CVE-2026-3787

HIGH

7.0

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.

CVE Details

CVSS v3.1 Score7.0

SeverityHIGH

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

Attack VectorLOCAL

ComplexityHIGH

Privileges RequiredLOW

User InteractionNONE

Published3/8/2026

Last Modified3/10/2026

Sourcenvd

Honeypot Sightings0

Affected Products

microsoft:windowsuvnc:ultravnc

Weaknesses (CWE)

CWE-426CWE-427CWE-426

References

https://drive.google.com/file/d/14ixv_1i4D2VrZWyl4RKsvFcN1AMF_qNx/view(cna@vuldb.com)

https://vuldb.com/?ctiid.349754(cna@vuldb.com)

https://vuldb.com/?id.349754(cna@vuldb.com)

https://vuldb.com/?submit.767257(cna@vuldb.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.