SUSE-SU-2026:1174-1: important: Security update for LibVNCServer

[SLE-UPDATES]

# Security update for LibVNCServer

Announcement ID: SUSE-SU-2026:1174-1  
Release Date: 2026-04-02T12:43:28Z  
Rating: important  
References:

  * bsc#1260429
  * bsc#1260431

  
Cross-References:

  * CVE-2026-32853
  * CVE-2026-32854

  
CVSS scores:

  * CVE-2026-32853 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-32853 ( SUSE ):  7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
  * CVE-2026-32853 ( NVD ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-32853 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
  * CVE-2026-32854 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-32854 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-32854 ( NVD ):  6.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-32854 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for LibVNCServer fixes the following issues:

  * CVE-2026-32853: crafted FramebufferUpdate message can lead to information
    disclosure or denial of service (bsc#1260431).
  * CVE-2026-32854: crafted HTTP requests can cause a denial of service
    (bsc#1260429).

## 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 Linux Enterprise Server 12 SP5 LTSS  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-1174=1

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-1174=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * LibVNCServer-devel-0.9.9-17.44.1
    * libvncserver0-0.9.9-17.44.1
    * LibVNCServer-debugsource-0.9.9-17.44.1
    * libvncserver0-debuginfo-0.9.9-17.44.1
    * libvncclient0-0.9.9-17.44.1
    * libvncclient0-debuginfo-0.9.9-17.44.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * LibVNCServer-devel-0.9.9-17.44.1
    * libvncserver0-0.9.9-17.44.1
    * LibVNCServer-debugsource-0.9.9-17.44.1
    * libvncserver0-debuginfo-0.9.9-17.44.1
    * libvncclient0-0.9.9-17.44.1
    * libvncclient0-debuginfo-0.9.9-17.44.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-32853.html
  * https://www.suse.com/security/cve/CVE-2026-32854.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1260429
  * https://bugzilla.suse.com/show_bug.cgi?id=1260431

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