Is CVE-2006-2369 actively exploited?

CVE-2006-2369 has no public evidence of in-the-wild exploitation as of 2026-04-16.

What is the CVSS score for CVE-2006-2369?

CVE-2006-2369 has a CVSS score of 7.5 (UNKNOWN severity). Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P.

How do I patch CVE-2006-2369?

Patch guidance is available from vnc security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2006-2369.

CVE-2006-2369 - remediation guidance & executive summary

Description

RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as "Type 1 - None", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.

CVSS Metrics

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector: network
Access Cmplx: low
Auth: none
Confidentiality: partial
Integrity: partial
Availability: partial
Weaknesses: CWE-287 · Improper Authentication

Metadata

Primary Vendor: VNC
Published: 5/15/2006
Last Modified: 4/16/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2006-2369

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary