CVE-2026-34003

EUVD-2026-25231
A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash, leading to a Denial of Service (DoS). In certain configurations, higher impact outcomes may be possible.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
xorg-server
bookworm
2:21.1.7-3+deb12u12
fixed
bookworm (security)
vulnerable
bullseye
postponed
bullseye (security)
vulnerable
forky
2:21.1.22-1
fixed
sid
2:21.1.23-1
fixed
trixie
2:21.1.16-1.3+deb13u2
fixed
trixie (security)
vulnerable
xwayland
bookworm
ignored
forky
2:24.1.12-1
fixed
sid
2:24.1.12-1
fixed
trixie
ignored
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
xorg-x11-server
suse enterprise desktop 15 SP7
21.1.15-150700.5.16.1
fixed
suse enterprise sap 15 SP7
21.1.15-150700.5.16.1
fixed
suse enterprise server 12 SP5
1.19.6-10.99.1
fixed
suse enterprise server 15 SP4
1.20.3-150400.38.68.1
fixed
suse enterprise server 15 SP5
21.1.4-150500.7.46.1
fixed
suse enterprise server 15 SP6
21.1.11-150600.5.25.1
fixed
suse enterprise server 15 SP7
21.1.15-150700.5.16.1
fixed
xorg-x11-server-Xvfb
suse enterprise desktop 15 SP7
21.1.15-150700.5.16.1
fixed
suse enterprise sap 15 SP7
21.1.15-150700.5.16.1
fixed
suse enterprise server 15 SP5
21.1.4-150500.7.46.1
fixed
suse enterprise server 15 SP6
21.1.11-150600.5.25.1
fixed
suse enterprise server 15 SP7
21.1.15-150700.5.16.1
fixed
xorg-x11-server-extra
suse enterprise desktop 15 SP7
21.1.15-150700.5.16.1
fixed
suse enterprise sap 15 SP7
21.1.15-150700.5.16.1
fixed
suse enterprise server 12 SP5
1.19.6-10.99.1
fixed
suse enterprise server 15 SP4
1.20.3-150400.38.68.1
fixed
suse enterprise server 15 SP5
21.1.4-150500.7.46.1
fixed
suse enterprise server 15 SP6
21.1.11-150600.5.25.1
fixed
suse enterprise server 15 SP7
21.1.15-150700.5.16.1
fixed
xorg-x11-server-sdk
suse enterprise server 15 SP4
1.20.3-150400.38.68.1
fixed
suse enterprise server 15 SP5
21.1.4-150500.7.46.1
fixed
suse enterprise server 15 SP6
21.1.11-150600.5.25.1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
tigervnc
RHEL 8
0:1.15.0-9.el8_10
fixed
RHEL 8.4 AUS
0:1.11.0-8.el8_4.15
fixed
RHEL 8.6 AUS
0:1.12.0-6.el8_6.17
fixed
RHEL 8.8 E4S
0:1.12.0-15.el8_8.17
fixed
RHEL 8.8 TUS
0:1.12.0-15.el8_8.17
fixed
RHEL 9
0:1.15.0-7.el9_8.1
fixed
tigervnc-icons
RHEL 8
0:1.15.0-9.el8_10
fixed
RHEL 8.4 AUS
0:1.11.0-8.el8_4.15
fixed
RHEL 8.6 AUS
0:1.12.0-6.el8_6.17
fixed
RHEL 8.8 E4S
0:1.12.0-15.el8_8.17
fixed
RHEL 8.8 TUS
0:1.12.0-15.el8_8.17
fixed
RHEL 9
0:1.15.0-7.el9_8.1
fixed
tigervnc-license
RHEL 8
0:1.15.0-9.el8_10
fixed
RHEL 8.4 AUS
0:1.11.0-8.el8_4.15
fixed
RHEL 8.6 AUS
0:1.12.0-6.el8_6.17
fixed
RHEL 8.8 E4S
0:1.12.0-15.el8_8.17
fixed
RHEL 8.8 TUS
0:1.12.0-15.el8_8.17
fixed
RHEL 9
0:1.15.0-7.el9_8.1
fixed
tigervnc-selinux
RHEL 8
0:1.15.0-9.el8_10
fixed
RHEL 8.4 AUS
0:1.11.0-8.el8_4.15
fixed
RHEL 8.6 AUS
0:1.12.0-6.el8_6.17
fixed
RHEL 8.8 E4S
0:1.12.0-15.el8_8.17
fixed
RHEL 8.8 TUS
0:1.12.0-15.el8_8.17
fixed
RHEL 9
0:1.15.0-7.el9_8.1
fixed
tigervnc-server
RHEL 8
0:1.15.0-9.el8_10
fixed
RHEL 8.4 AUS
0:1.11.0-8.el8_4.15
fixed
RHEL 8.6 AUS
0:1.12.0-6.el8_6.17
fixed
RHEL 8.8 E4S
0:1.12.0-15.el8_8.17
fixed
RHEL 8.8 TUS
0:1.12.0-15.el8_8.17
fixed
RHEL 9
0:1.15.0-7.el9_8.1
fixed
tigervnc-server-minimal
RHEL 8
0:1.15.0-9.el8_10
fixed
RHEL 8.4 AUS
0:1.11.0-8.el8_4.15
fixed
RHEL 8.6 AUS
0:1.12.0-6.el8_6.17
fixed
RHEL 8.8 E4S
0:1.12.0-15.el8_8.17
fixed
RHEL 8.8 TUS
0:1.12.0-15.el8_8.17
fixed
RHEL 9
0:1.15.0-7.el9_8.1
fixed
tigervnc-server-module
RHEL 8
0:1.15.0-9.el8_10
fixed
RHEL 8.4 AUS
0:1.11.0-8.el8_4.15
fixed
RHEL 8.6 AUS
0:1.12.0-6.el8_6.17
fixed
RHEL 8.8 E4S
0:1.12.0-15.el8_8.17
fixed
RHEL 8.8 TUS
0:1.12.0-15.el8_8.17
fixed
RHEL 9
0:1.15.0-7.el9_8.1
fixed
xorg-x11-server-Xdmx
RHEL 8
0:1.20.11-28.el8_10
fixed
RHEL 8.4 AUS
0:1.20.10-4.el8_4
fixed
RHEL 8.6 AUS
0:1.20.11-7.el8_6
fixed
RHEL 8.6 E4S
0:1.20.11-7.el8_6
fixed
RHEL 8.6 TUS
0:1.20.11-7.el8_6
fixed
RHEL 8.8 E4S
0:1.20.11-18.el8_8
fixed
RHEL 8.8 TUS
0:1.20.11-18.el8_8
fixed
RHEL 9
0:1.20.11-34.el9_8
fixed
xorg-x11-server-Xephyr
RHEL 8
0:1.20.11-28.el8_10
fixed
RHEL 8.4 AUS
0:1.20.10-4.el8_4
fixed
RHEL 8.6 AUS
0:1.20.11-7.el8_6
fixed
RHEL 8.6 E4S
0:1.20.11-7.el8_6
fixed
RHEL 8.6 TUS
0:1.20.11-7.el8_6
fixed
RHEL 8.8 E4S
0:1.20.11-18.el8_8
fixed
RHEL 8.8 TUS
0:1.20.11-18.el8_8
fixed
RHEL 9
0:1.20.11-34.el9_8
fixed
xorg-x11-server-Xnest
RHEL 8
0:1.20.11-28.el8_10
fixed
RHEL 8.4 AUS
0:1.20.10-4.el8_4
fixed
RHEL 8.6 AUS
0:1.20.11-7.el8_6
fixed
RHEL 8.6 E4S
0:1.20.11-7.el8_6
fixed
RHEL 8.6 TUS
0:1.20.11-7.el8_6
fixed
RHEL 8.8 E4S
0:1.20.11-18.el8_8
fixed
RHEL 8.8 TUS
0:1.20.11-18.el8_8
fixed
RHEL 9
0:1.20.11-34.el9_8
fixed
xorg-x11-server-Xorg
RHEL 8
0:1.20.11-28.el8_10
fixed
RHEL 8.4 AUS
0:1.20.10-4.el8_4
fixed
RHEL 8.6 AUS
0:1.20.11-7.el8_6
fixed
RHEL 8.6 E4S
0:1.20.11-7.el8_6
fixed
RHEL 8.6 TUS
0:1.20.11-7.el8_6
fixed
RHEL 8.8 E4S
0:1.20.11-18.el8_8
fixed
RHEL 8.8 TUS
0:1.20.11-18.el8_8
fixed
RHEL 9
0:1.20.11-34.el9_8
fixed
xorg-x11-server-Xvfb
RHEL 8
0:1.20.11-28.el8_10
fixed
RHEL 8.4 AUS
0:1.20.10-4.el8_4
fixed
RHEL 8.6 AUS
0:1.20.11-7.el8_6
fixed
RHEL 8.6 E4S
0:1.20.11-7.el8_6
fixed
RHEL 8.6 TUS
0:1.20.11-7.el8_6
fixed
RHEL 8.8 E4S
0:1.20.11-18.el8_8
fixed
RHEL 8.8 TUS
0:1.20.11-18.el8_8
fixed
RHEL 9
0:1.20.11-34.el9_8
fixed
xorg-x11-server-Xwayland
RHEL 8.4 AUS
0:1.20.10-4.el8_4
fixed
RHEL 9
0:24.1.9-4.el9_8
fixed
xorg-x11-server-Xwayland-devel
RHEL 9
0:24.1.9-4.el9_8
fixed
xorg-x11-server-common
RHEL 8
0:1.20.11-28.el8_10
fixed
RHEL 8.4 AUS
0:1.20.10-4.el8_4
fixed
RHEL 8.6 AUS
0:1.20.11-7.el8_6
fixed
RHEL 8.6 E4S
0:1.20.11-7.el8_6
fixed
RHEL 8.6 TUS
0:1.20.11-7.el8_6
fixed
RHEL 8.8 E4S
0:1.20.11-18.el8_8
fixed
RHEL 8.8 TUS
0:1.20.11-18.el8_8
fixed
RHEL 9
0:1.20.11-34.el9_8
fixed
xorg-x11-server-devel
RHEL 8
0:1.20.11-28.el8_10
fixed
RHEL 9
0:1.20.11-34.el9_8
fixed
xorg-x11-server-source
RHEL 8
0:1.20.11-28.el8_10
fixed
RHEL 9
0:1.20.11-34.el9_8
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
tigervnc
Amazon Linux 2
0:1.8.0-24.amzn2.0.9
fixed
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-debuginfo
Amazon Linux 2
0:1.8.0-24.amzn2.0.9
fixed
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-debugsource
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-icons
Amazon Linux 2
0:1.8.0-24.amzn2.0.9
fixed
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-license
Amazon Linux 2
0:1.8.0-24.amzn2.0.9
fixed
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-selinux
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-server
Amazon Linux 2
0:1.8.0-24.amzn2.0.9
fixed
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-server-applet
Amazon Linux 2
0:1.8.0-24.amzn2.0.9
fixed
tigervnc-server-debuginfo
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-server-minimal
Amazon Linux 2
0:1.8.0-24.amzn2.0.9
fixed
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-server-minimal-debuginfo
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-server-module
Amazon Linux 2
0:1.8.0-24.amzn2.0.9
fixed
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
tigervnc-server-module-debuginfo
Amazon Linux 2023
0:1.14.1-3.amzn2023.0.5
fixed
xorg-x11-server-Xdmx
Amazon Linux 2
0:1.20.4-22.amzn2.0.11
fixed
xorg-x11-server-Xephyr
Amazon Linux 2
0:1.20.4-22.amzn2.0.11
fixed
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-Xephyr-debuginfo
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-Xnest
Amazon Linux 2
0:1.20.4-22.amzn2.0.11
fixed
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-Xnest-debuginfo
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-Xorg
Amazon Linux 2
0:1.20.4-22.amzn2.0.11
fixed
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-Xorg-debuginfo
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-Xvfb
Amazon Linux 2
0:1.20.4-22.amzn2.0.11
fixed
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-Xvfb-debuginfo
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-Xwayland
Amazon Linux 2
0:1.20.4-22.amzn2.0.11
fixed
Amazon Linux 2023
0:24.1.3-1.amzn2023.0.4
fixed
xorg-x11-server-Xwayland-debuginfo
Amazon Linux 2023
0:24.1.3-1.amzn2023.0.4
fixed
xorg-x11-server-Xwayland-debugsource
Amazon Linux 2023
0:24.1.3-1.amzn2023.0.4
fixed
xorg-x11-server-Xwayland-devel
Amazon Linux 2023
0:24.1.3-1.amzn2023.0.4
fixed
xorg-x11-server-common
Amazon Linux 2
0:1.20.4-22.amzn2.0.11
fixed
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-debuginfo
Amazon Linux 2
0:1.20.4-22.amzn2.0.11
fixed
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-debugsource
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-devel
Amazon Linux 2
0:1.20.4-22.amzn2.0.11
fixed
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
xorg-x11-server-source
Amazon Linux 2
0:1.20.4-22.amzn2.0.11
fixed
Amazon Linux 2023
0:21.1.13-5.amzn2023.0.9
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
xorg-x11-server-Xwayland
Azure Linux 3.0
0:24.1.6-4.azl3
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://access.redhat.com/errata/RHSA-2026:10739
https://access.redhat.com/errata/RHSA-2026:11352
https://access.redhat.com/errata/RHSA-2026:11369
https://access.redhat.com/errata/RHSA-2026:11388
https://access.redhat.com/errata/RHSA-2026:11656
https://access.redhat.com/errata/RHSA-2026:11692
https://access.redhat.com/errata/RHSA-2026:13414
https://access.redhat.com/errata/RHSA-2026:19125
https://access.redhat.com/errata/RHSA-2026:19342
https://access.redhat.com/errata/RHSA-2026:19343
https://access.redhat.com/errata/RHSA-2026:19344
https://access.redhat.com/errata/RHSA-2026:20547
https://access.redhat.com/errata/RHSA-2026:20555
https://access.redhat.com/errata/RHSA-2026:20557
https://access.redhat.com/errata/RHSA-2026:20558
https://access.redhat.com/errata/RHSA-2026:20560
https://access.redhat.com/errata/RHSA-2026:20561
https://access.redhat.com/errata/RHSA-2026:20562
https://access.redhat.com/errata/RHSA-2026:20563
https://access.redhat.com/errata/RHSA-2026:20575
https://access.redhat.com/errata/RHSA-2026:20576
https://access.redhat.com/errata/RHSA-2026:20590
https://access.redhat.com/errata/RHSA-2026:21699
https://access.redhat.com/errata/RHSA-2026:21712
https://access.redhat.com/errata/RHSA-2026:21715
https://access.redhat.com/errata/RHSA-2026:21716
https://access.redhat.com/errata/RHSA-2026:21718
https://access.redhat.com/errata/RHSA-2026:21741
https://access.redhat.com/errata/RHSA-2026:21742
https://access.redhat.com/errata/RHSA-2026:22424
https://access.redhat.com/errata/RHSA-2026:22456
https://access.redhat.com/errata/RHSA-2026:23254
https://access.redhat.com/errata/RHSA-2026:23255
https://access.redhat.com/errata/RHSA-2026:23496
https://access.redhat.com/errata/RHSA-2026:24341
https://access.redhat.com/security/cve/CVE-2026-34003
https://bugzilla.redhat.com/show_bug.cgi?id=2451113