CVE-2025-49179CWE-190

Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extension

High · published June 17, 2025

CVSS v3.1
7.3
EPSS
0%
Percentile
26.2
In the wild
Unconfirmed
What it is

A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00340 · 26.2th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2025-06-17T14:54Z
EPSS history
Timeline
  • 17 JUN 14:54Z
    Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extension
    cvelistv5