Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-34002

35
FAUCET Score

A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive information or cause the server to crash, resulting in a denial of service.

First published: May 5, 2026Last modified: Jun 8, 2026

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:x.org:x_server:-:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
1.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.49%
Probability of exploitation in next 30 days
EPSS Percentile
39.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0049 is in the 17th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

access.redhat.com / errata/RHSA-2026:20547
access.redhat.com / errata/RHSA-2026:20555
access.redhat.com / errata/RHSA-2026:20557
access.redhat.com / errata/RHSA-2026:20558
access.redhat.com / errata/RHSA-2026:20560
access.redhat.com / errata/RHSA-2026:20561
access.redhat.com / errata/RHSA-2026:20562
access.redhat.com / errata/RHSA-2026:20563
access.redhat.com / errata/RHSA-2026:20575
access.redhat.com / errata/RHSA-2026:20576
access.redhat.com / errata/RHSA-2026:20590
access.redhat.com / errata/RHSA-2026:21699
access.redhat.com / errata/RHSA-2026:21712
access.redhat.com / errata/RHSA-2026:21715
access.redhat.com / errata/RHSA-2026:21716
access.redhat.com / errata/RHSA-2026:21718
access.redhat.com / errata/RHSA-2026:21741
access.redhat.com / errata/RHSA-2026:21742
access.redhat.com / errata/RHSA-2026:22424
access.redhat.com / errata/RHSA-2026:22456
access.redhat.com / errata/RHSA-2026:23254
access.redhat.com / errata/RHSA-2026:23255
access.redhat.com / errata/RHSA-2026:23496
access.redhat.com / errata/RHSA-2026:24341
access.redhat.com / security/cve/CVE-2026-34002
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory