RHSA-2021:1783 — Security Advisory

Red Hat Security Advisory: tigervnc security, bug fix, and enhancement update

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Severity

Moderate

Red Hat Product Security

RHEL 8

Products

Official CSAF product identity

Published · May 18, 2021

Updated · November 22, 2025

Topic

An update for tigervnc is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.

The following packages have been upgraded to a later upstream version: tigervnc (1.11.0). (BZ#1880985)

Security Fix(es):

  • tigervnc: certificate exceptions stored as authorities (CVE-2020-26117)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section.

Related CVEs

RHSA-2021:1783 — Red Hat Security Advisory: tigervnc security, bug fix, and enhancement update | PulseLinux