CVE-2026-55999
HIGH SEVERITYCVSS Score & Metrics
Base Score
8.5 / 10
Vector String
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Vulnerability Description
Local attackers with a X connection able to provide PCX fonts to the X
server xorg-server before 21.2.24 and xwayland before 24.1.13 could
cause a heap buffer overflow via SetFont due to missing glyph boundary checks.
server xorg-server before 21.2.24 and xwayland before 24.1.13 could
cause a heap buffer overflow via SetFont due to missing glyph boundary checks.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-122
Source
NVD
Vendor
X.Org
Product
xorg-server, xwayland
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