CVE-2026-56001

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

CVSS v3 8.5 HIGH

8.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://gitlab.freedesktop.org/xorg/lib/libxfont/-/commit/be0b08e2d354138d3222b4490e2a77c6ee42f778	Patch
https://www.openwall.com/lists/oss-security/2026/07/08/1	Mailing List Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:x:libxfont:*:*:*:*:*:*:*:*

History

25 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Un desbordamiento de búfer en el heap en BitmapScaleBitmaps en libXfont2 anterior a 2.0.8 debido a un tamaño de 32 bits desbordado podría ser utilizado por atacantes capaces de acceder al X Server para ejecutar código dentro del X servidor cont

Information

Published : 2026-07-08 09:16

Updated : 2026-10-25 20:10

NVD link : CVE-2026-56001

Mitre link : CVE-2026-56001

CVE.ORG link : CVE-2026-56001

JSON object : View

Products Affected

x

libxfont

CWE

CWE-122

Heap-based Buffer Overflow

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