SUSE-SU-2026:3803-1: important: Security update for LibVNCServer

[SLE-SECURITY-UPDATES]

# Security update for LibVNCServer

Announcement ID: SUSE-SU-2026:3803-1  
Release Date: 2026-08-25T18:48:49Z  
Rating: important  
References:

  * bsc#1276218

  
Cross-References:

  * CVE-2026-50538

  
CVSS scores:

  * CVE-2026-50538 ( SUSE ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-50538 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7
  * SUSE Package Hub 15 15-SP7

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for LibVNCServer fixes the following issue:

  * CVE-2026-50538: a malicious (or man-in-the-middle) VNC server can force a
    connecting `libvncclient` to write attacker- controlled data past the end of
    its framebuffer (bsc#1276218).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Package Hub 15 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-3803=1

## Package List:

  * SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x x86_64)
    * LibVNCServer-debugsource-0.9.10-150000.4.41.1
    * libvncserver0-debuginfo-0.9.10-150000.4.41.1
    * libvncserver0-0.9.10-150000.4.41.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-50538.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1276218

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