CVE-2026-93519
X.Org Server XFixes Pointer Barrier Event List Buffer Overflow
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.
| CWE | CWE-122 |
| Vendor | x.org |
| Product | xorg-x11-server |
| Published | Oct 28, 2026 |
Stay Ahead of the Next One
Get instant alerts for x.org xorg-x11-server
Be the first to know when new high vulnerabilities affecting x.org xorg-x11-server are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
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
High
Integrity
High
Availability
High
Affected Versions
x.org / xorg-x11-server
0 < 21.1.25
x.orgg / xwayland
0 < 24.1.14
References
Credits
Anonymous working with TrendAI Zero Day Initiative