CVE-2026-4962

A security flaw has been discovered in UltraVNC up to 1.6.4.0. Affected by this issue is some unknown functionality in the library version.dll of the component Service. The manipulation results in uncontrolled search path. The attack needs to be approached locally. This attack is characterized by high complexity. The exploitation is known to be difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3 7.0 HIGH
CVSS v2.0 6.0 MEDIUM

7.0^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.0 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:H/Au:S/C:C/I:C/A:C

Exploitability : 1.5 / Impact : 10.0

Access Vector LOCAL

Access Complexity HIGH

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://drive.google.com/file/d/1QC-MrqGsfjr4phEN77krLFZHQN8S48U_/view	Permissions Required
https://vuldb.com/?ctiid.353839	Permissions Required VDB Entry
https://vuldb.com/?id.353839	Third Party Advisory VDB Entry
https://vuldb.com/?submit.777619	Exploit Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-27 17:16

Updated : 2026-06-17 10:57

NVD link : CVE-2026-4962

Mitre link : CVE-2026-4962

CVE.ORG link : CVE-2026-4962

JSON object : View

Products Affected

uvnc

ultravnc

CWE

CWE-426

Untrusted Search Path

CWE-427

Uncontrolled Search Path Element

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