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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Redhat
  • Enterprise Linux
  • Enterprise Linux Eus
  • Rhel Aus
  • Rhel E4s
  • Rhel Els
  • Rhel Eus
  • Rhel Eus Long Life
  • Rhel Tus
X.org
  • X.org

No data.

No data.

References
Link Providers
https://access.redhat.com/errata/RHSA-2026:10739 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:11352 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:11369 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:11388 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:11656 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:11692 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:13414 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:19125 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:19342 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:19343 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:19344 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20547 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20555 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20557 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20558 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20560 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20561 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20562 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20563 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20575 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20576 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:20590 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:21699 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:21712 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:21715 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:21716 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:21718 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:21741 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:21742 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:22424 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:22456 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2026-34003 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2451113 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-34003 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-34003 cve-icon
History

Wed, 03 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:7
References

Tue, 02 Jun 2026 10:00:00 +0000

Type Values Removed Values Added
References

Thu, 28 May 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Eus Long Life
CPEs cpe:/a:redhat:rhel_aus:8.4::appstream
cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Vendors & Products Redhat rhel Eus Long Life
References

Thu, 28 May 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Aus
Redhat rhel Tus
CPEs cpe:/a:redhat:rhel_aus:8.6::appstream
cpe:/a:redhat:rhel_e4s:8.6::appstream
cpe:/a:redhat:rhel_e4s:8.8::appstream
cpe:/a:redhat:rhel_tus:8.6::appstream
cpe:/a:redhat:rhel_tus:8.8::appstream
Vendors & Products Redhat rhel Aus
Redhat rhel Tus
References

Thu, 28 May 2026 08:45:00 +0000

Type Values Removed Values Added
References

Tue, 26 May 2026 09:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_e4s:9.2::appstream
References

Tue, 26 May 2026 06:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_eus:9.4::crb
References

Tue, 26 May 2026 05:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat enterprise Linux Eus
Redhat rhel Els
CPEs cpe:/a:redhat:rhel_eus:9.6::appstream
cpe:/a:redhat:rhel_eus:9.6::crb
cpe:/o:redhat:enterprise_linux_eus:10.0
cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat enterprise Linux Eus
Redhat rhel Els
References

Tue, 26 May 2026 03:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_eus:9.4::appstream
Vendors & Products Redhat rhel Eus
References

Tue, 26 May 2026 02:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel E4s
CPEs cpe:/a:redhat:rhel_e4s:9.0::appstream
Vendors & Products Redhat rhel E4s
References

Wed, 20 May 2026 03:30:00 +0000

Type Values Removed Values Added
References

Tue, 19 May 2026 22:00:00 +0000

Type Values Removed Values Added
References

Tue, 19 May 2026 21:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10.2
References

Mon, 04 May 2026 13:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:8
References

Wed, 29 Apr 2026 18:30:00 +0000

Type Values Removed Values Added
References

Wed, 29 Apr 2026 13:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:8::appstream
cpe:/a:redhat:enterprise_linux:8::crb
References

Tue, 28 Apr 2026 22:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9
References

Tue, 28 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:9::crb
References

Tue, 28 Apr 2026 13:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:10.1
References

Tue, 28 Apr 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared X.org
X.org x.org
Vendors & Products X.org
X.org x.org

Mon, 27 Apr 2026 10:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:9::appstream
References

Fri, 24 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 threat_severity

Important

Thu, 23 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 23 Apr 2026 15:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Xorg: xwayland: x.org x server: information exposure and denial of service via out-of-bounds memory access
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-125
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-04-23T14:54:05.479Z

Updated: 2026-06-02T22:09:02.604Z

Reserved: 2026-03-25T04:53:13.615Z

Link: CVE-2026-34003

cve-icon Vulnrichment

Updated: 2026-04-23T17:20:44.391Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-23T16:16:24.920

Modified: 2026-06-02T23:16:37.190

Link: CVE-2026-34003

cve-icon Redhat

Severity : Important

Publid Date: 2026-04-23T14:18:00Z

Links: CVE-2026-34003 - Bugzilla