CVE-2026-56001CWE-122

libXfont2 BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow

High · published July 8, 2026

CVSS v3.1
8.5
EPSS
0%
Percentile
32.2
In the wild
Unconfirmed
What it is

A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size could be used by attackers able to access the X Server to execute code within the X server cont

The record
Technical detail
CVSS v3.1
8.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00392 · 32.2th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-07-08T08:49Z
EPSS history
Timeline
  • 08 JUL 08:49Z
    libXfont2 BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow
    cvelistv5