Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2006-2369

Improper Authentication

Published: May 15, 2006 | Modified: Apr 03, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM
Vulnerability-free packages from our partners
root.io logo minimus.io logo echo.ai logo
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2006-2369
CWEhttps://cwe.mitre.org/data/definitions/287.html

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.

Weakness

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Software

NameVendorStart VersionEnd Version
RealvncVnc4.1.1 (including)4.1.1 (including)
Vnc4Ubuntudapper*
Vnc4Ubuntudevel*
Vnc4Ubuntuedgy*
Vnc4Ubuntufeisty*

Potential Mitigations

References

Aqua Security is the largest pure-play cloud native security company, providing customers the freedom to innovate and run their businesses with minimal friction. The Aqua Cloud Native Security Platform provides prevention, detection, and response automation across the entire application lifecycle to secure the build, secure cloud infrastructure and secure running workloads wherever they are deployed.
Copyright © 2026 Aqua Security Software Ltd.   Privacy Policy | Terms of Use