CVE-2025-49177CWE-200

Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: data leak in xfixes extension's xfixessetclientdisconnectmode

Medium · published June 17, 2025

CVSS v3.1
6.1
EPSS
0%
Percentile
37.2
In the wild
Unconfirmed
What it is

A flaw was found in the XFIXES extension. The XFixesSetClientDisconnectMode handler does not validate the request length, allowing a client to read unintended memory from previous requests.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00440 · 37.2th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2025-06-17T14:49Z
EPSS history
Timeline
  • 17 JUN 14:49Z
    Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: data leak in xfixes extension's xfixessetclientdisconnectmode
    cvelistv5