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-2025-26599

26
FAUCET Score

CVE-2025-26599 is an uninitialized pointer flaw in X.Org and Xwayland, including Red Hat and TigerVNC products. This vulnerability, rated 7.8 HIGH, could allow a local, low-privileged attacker to achieve high impact on confidentiality, integrity, and availability with low attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:tigervnc:tigervnc:-:*:*:*:*:*:*:*
< 21.1.16CPE matchmatch criteria
cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*
< 24.1.6CPE matchmatch criteria
cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 72nd percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (27)

codesyspatch availablevia llm_extracted
View patch
esphomepatch availablevia llm_extracted
View patch
microsoftpatch availablevia msrc
Product: 19372-17084Fixed in: 24.1.6-1
microsoftpatch availablevia msrc
Product: 19982-17086Fixed in: 1.20.10-15
microsoftpatch availablevia msrc
Product: azl3 xorg-x11-server-Xwayland 24.1.1-3 on Azure Linux 3.0Fixed in: 24.1.6-1
microsoftpatch availablevia msrc
Product: cbl2 xorg-x11-server 1.20.10-15 on CBL Mariner 2.0Fixed in: 1.20.10-15
microsoftpatch availablevia msrc
Product: azl3 xorg-x11-server-Xwayland 24.1.6-1 on Azure Linux 3.0Fixed in: 24.1.6-1
microsoftpatch availablevia msrc
Product: 17593-17084Fixed in: 24.1.6-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportFixed in: tigervnc-0:1.12.0-6.el8_6.13
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: tigervnc-0:1.12.0-6.el8_6.13
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: tigervnc-0:1.12.0-6.el8_6.13
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: tigervnc-0:1.12.0-15.el8_8.12
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: tigervnc-0:1.14.1-1.el9_5.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: xorg-x11-server-Xwayland-0:24.1.5-3.el10_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: xorg-x11-server-Xwayland-0:23.2.7-3.el9_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsFixed in: tigervnc-0:1.11.0-22.el9_0.13
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: tigervnc-0:1.12.0-14.el9_2.10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.4 Extended Update SupportFixed in: tigervnc-0:1.13.1-8.el9_4.5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: xorg-x11-server-0:1.20.11-28.el9_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 Extended Lifecycle SupportFixed in: tigervnc-0:1.8.0-36.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 Extended Lifecycle SupportFixed in: xorg-x11-server-0:1.20.4-30.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: tigervnc-0:1.13.1-15.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: tigervnc-0:1.9.0-15.el8_2.13
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportFixed in: tigervnc-0:1.11.0-8.el8_4.12
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceFixed in: tigervnc-0:1.11.0-8.el8_4.12
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsFixed in: tigervnc-0:1.11.0-8.el8_4.12
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: tigervnc

Vendor Advisories (4)

codesysllm-codesys-fe85e88fbae25bb9CRITICAL

HP ThinPro 8.1 SP7 Security Updates

Jun 3, 2025
esphomellm-esphome-ed450ce9fd6a7380CRITICAL

HP ThinPro 8.1 SP7 Security Updates

Jun 3, 2025
redhatCVE-2025-26599Important

xorg: xwayland: Use of uninitialized pointer in compRedirectWindow()

Feb 25, 2025
microsoft2025-Feb/CVE-2025-26599Important

Xorg: xwayland: use of uninitialized pointer in compredirectwindow()

Feb 11, 2025

References

lists.debian.org / debian-lts-announce/2025/02/msg00036.html
access.redhat.com / errata/RHSA-2025:2500
Third Party Advisory
access.redhat.com / errata/RHSA-2025:2502
Third Party Advisory
access.redhat.com / errata/RHSA-2025:2861
Third Party Advisory
access.redhat.com / errata/RHSA-2025:2862
Third Party Advisory
access.redhat.com / errata/RHSA-2025:2865
Third Party Advisory
access.redhat.com / errata/RHSA-2025:2866
Third Party Advisory
access.redhat.com / errata/RHSA-2025:2873
Third Party Advisory
access.redhat.com / errata/RHSA-2025:2874
Third Party Advisory
access.redhat.com / errata/RHSA-2025:2875
Third Party Advisory
access.redhat.com / errata/RHSA-2025:2879
Third Party Advisory
access.redhat.com / errata/RHSA-2025:2880
Third Party Advisory
access.redhat.com / errata/RHSA-2025:3976
access.redhat.com / errata/RHSA-2025:7163
access.redhat.com / errata/RHSA-2025:7165
access.redhat.com / errata/RHSA-2025:7458
access.redhat.com / security/cve/CVE-2025-26599
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue Tracking