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SUSE LibVNCServer Important Buffer Overflow Vuln 2026-2427-1

suse
Calendar Grey June 17, 2026
Dist Suse Esm H88
An important SUSE update for LibVNCServer fixes a critical out-of-bounds write issue to enhance system security.
An update that solves one vulnerability can now be installed.

Summary

## This update for LibVNCServer fixes the following issues: * CVE-2026-44988: Fixed missing validation of rectangle width in tight gradient decoding can lead to server-triggered out-of-bounds write (bsc#1266459). ## 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: * openSUSE Leap 15.6 zypper in -t patch SUSE-2026-2427=1 * SUSE Package Hub 15 15-SP7 zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-2427=1 * SUSE Linux Enterprise Workstation Extension 15 SP7 zypper in -t patch SUSE-SLE-Product-WE-15-SP7-2026-2427=1 ## Package List: * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586) * LibVNCServer-devel-0.9.14-150600.3.9.1

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important libvncserver CVE-2026-44988

References

* bsc#1266459

Cross-

* CVE-2026-44988

CVSS scores:

* CVE-2026-44988 ( SUSE ): 9.2

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2026-44988 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-44988 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Products:

* openSUSE Leap 15.6

* 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 Linux Enterprise Workstation Extension 15 SP7

* SUSE Package Hub 15 15-SP7

An update that solves one vulnerability can now be installed.

##

* https://www.suse.com/security/cve/CVE-2026-44988.html

* https://bugzilla.suse.com/show_bug.cgi?id=1266459

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2427-1
Release Date: 2026-06-17T09:50:23Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important libvncserver CVE-2026-44988

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