CVE-2018-20023

libvncserver: Improper initialization in VNC Repeater client code allows for information disclosure

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Severity

Low

Red Hat Product Security

4.3

CVSS 3.0

Review impact separately from score.

Published · December 19, 2018

Updated · November 22, 2025

Description

LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 4.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CWE-665 · Improper Initialization