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Vulnerability · Published Jun 17, 2020 · Assigned by mitre

CVE-2020-14405

Medium 6.5

In plain English

A medium-severity security flaw in the libvncserver package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.9%top 20.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

An issue was discovered in LibVNCServer before 0.9.13. libvncclient/rfbproto.c does not limit TextChat size.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8libvncserver0.9.11-17.el8ALSA-2021:1811
AlmaLinux:8libvncserver-devel0.9.11-17.el8ALSA-2021:1811
Alpine:v3.20libvncserver0.9.13-r0ALPINE-CVE-2020-14405
Alpine:v3.21libvncserver0.9.13-r0ALPINE-CVE-2020-14405
Alpine:v3.22libvncserver0.9.13-r0ALPINE-CVE-2020-14405
Alpine:v3.23libvncserver0.9.13-r0ALPINE-CVE-2020-14405
Alpine:v3.24libvncserver0.9.13-r0ALPINE-CVE-2020-14405
Debian:12libvncserver0.9.13+dfsg-1DEBIAN-CVE-2020-14405
Debian:13libvncserver0.9.13+dfsg-1DEBIAN-CVE-2020-14405
Debian:14libvncserver0.9.13+dfsg-1DEBIAN-CVE-2020-14405
Rocky Linux:8libvncserver0:0.9.11-17.el8RLSA-2021:1811
Ubuntu:22.04:LTSveyonno fix listedUBUNTU-CVE-2020-14405
Ubuntu:24.04:LTSveyonno fix listedUBUNTU-CVE-2020-14405
Ubuntu:25.10veyonno fix listedUBUNTU-CVE-2020-14405
Ubuntu:26.04:LTSveyonno fix listedUBUNTU-CVE-2020-14405
Ubuntu:26.10veyonno fix listedUBUNTU-CVE-2020-14405

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References