ELSA-2026-13414: Security update for 7 packages

ELSA-2026-13414, released May 5, 2026, fixes 4 CVEs across 7 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0038

32nd percentile

Priority of the 4 CVEs

Patch now 0
                                Urgent 0
                                High 4
                                Routine 0

Fixed package versions

Product	Release	Fixed in
tigervnc	ol 8	0:1.15.0-9.el8_10
tigervnc-icons	ol 8	0:1.15.0-9.el8_10
tigervnc-license	ol 8	0:1.15.0-9.el8_10
tigervnc-selinux	ol 8	0:1.15.0-9.el8_10
tigervnc-server	ol 8	0:1.15.0-9.el8_10
tigervnc-server-minimal	ol 8	0:1.15.0-9.el8_10
tigervnc-server-module	ol 8	0:1.15.0-9.el8_10

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-33999	Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling	7.8	0.0038	None reported
High	CVE-2026-34001	xorg-x11-server-common: X.Org is an open-source implementation of the X Window System	7.8	0.0026	None reported
High	CVE-2026-34352	tigervnc: Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment...	9.8	0.0025	None reported
High	CVE-2026-34003	xorg-x11-server-common: X.Org is an open-source implementation of the X Window System	7.8	0.0025	None reported

Also fixes CVE-2026-33999

RLSA-2026:19342
tigervnc on rocky 9
ALSA-2026:19342
tigervnc, tigervnc-icons, tigervnc-license and 4 more on almalinux 9
RHSA-2026:19342
tigervnc, tigervnc-icons, tigervnc-license and 4 more on RHEL 9
RHSA-2026:20563
xorg-x11-server-Xwayland on RHEL 10
ALAS2023-2026-1613
xorg-x11-server-Xwayland, xorg-x11-server-Xwayland-debuginfo, xorg-x11-server-Xwayland-debugsource and 1 more on amzn 2023
ALAS2023-2026-1614
xorg-x11-server-Xephyr, xorg-x11-server-Xephyr-debuginfo, xorg-x11-server-Xnest and 10 more on amzn 2023
ALAS2023-2026-1626
tigervnc, tigervnc-debuginfo, tigervnc-debugsource and 9 more on amzn 2023
SUSE-SU-2026:21211-1
xwayland on sles 16.0

Vendor advisory

https://linux.oracle.com/errata/ELSA-2026-13414.html

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