CVE-2025-49176CWE-190

Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension

High · published June 17, 2025

CVSS v3.1
7.3
EPSS
0%
Percentile
29.3
In the wild
Unconfirmed
What it is

A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check.

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:L/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00366 · 29.3th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2025-06-17T14:49Z
EPSS history
Timeline
  • 17 JUN 14:49Z
    Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension
    cvelistv5